Physical chemistry Books

Book SynopsisPeroxy radicals are formed in biological systems, the atmosphere and agueous waste and are important intermediates in the breakdown both of organic molecules and several inorganic species. The implications of their chemistry are far reaching and of great importance. Until now their has been no one volume which bring together all aspects of peroxy radical chemistry - from their formation, to their wide and varied chemistry in the aqueous environment, biological systems, solid matrices, polymeric systems and the atmosphere. Peroxy radicals react with CFCs and HFCs in the atmosphere, resulting in the further destruction of the ozone layer - a point which is of topical interest.Table of ContentsPartial table of contents: Formation of Peroxyl Radicals in Solution (Z. Alfassi). Methods of Preparing Organic Peroxy Radicals for Laboratory Studies (O. Nielsen & T. Wallington). The Thermochemistry of Peroxides and Polyoxides, and their Free Radicals (S. Benson & N. Cohen). Ultraviolet Absorption Spectra of Peroxy Radicals in the Gas Phase (O. Nielsen & T. Wallington). Kinetic Studies of Organic Peroxyl Radicals in Aqueous Solutions and Mixed Solvents (Z. Alfassi, et al.). Electron Spin Resonance Studies of Peroxyl Radicals in Solid Matrices (C. Rhodes). Organic Peroxy Radicals in Polymeric Systems (Y. Hori). Peroxy Radicals and the Atmosphere (T. Wallington & O. Nielsen). Peroxyl Radicals in the Treatment of Waste Solutions (N. Getoff). Index.

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Book SynopsisThe octanol-water partition coefficient is a laboratory-measured property of a substance. It provides a thermodynamic measure of the tendency of the substance to prefer a non-aqueous or oily milieu rather than water (i.e. its hydrophilic/lipophilic balance). Partition coefficients are used extensively in medicinal chemistry, drug design, ecotoxicology and environmental chemistry. The partition coefficient is recognized by governmental and international agencies (U.S. Environmental Protection Agency, OECD) as a physical property of organic pollutants equal in importance to vapour pressure, water solubility and toxicity. Octanol-Water Partition Coefficients is a comprehensive and up-to-date survey of the thermodynamics of partitioning and of the octanol-water pair. In addition, all current methods of measurement are reviewed, strengths and weaknesses are noted and recommendations for particular applications are given. Current methods of calculation of partition coefficients are similarlyTable of ContentsThermodynamics and Extrathermodynamics of Partitioning. Experimental Methods of Measurement. Discussion of Measurement Methods. Methods of Calculating Partition Coefficients. Discussion on Log Kow Predictive Methods. Appendix. Index.

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Book SynopsisThis book consists of two parts, theory and applications. Part I introduces the kinetic theory of gases with relevance to molecular energies and intermolecular forces. Part II focuses on how these theories are used to explain real techniques and phenomena involving gases. By stressing the practical implications, the book explains the theory of gas dynamics in a highly readable and comprehensive manner.Table of ContentsBASIC THEORY. Elementary Kinetic of Gases. Molecular Statistics. Distribution of Molecular Speeds. Molecular Energies. Transport Phenomena. Intermolecular Forces. Real Gases. Molecular Collisions. APPLICATIONS. Effusion and the Separation of Mixtures. Chemical Reactions. Ortho and Para Hydrogen. Atomic and Molecular Beams. Energy Transfer. Broadening of Spectral Lines. Gas Lasers. Gas Plasmas. References. Further Reading. Index.

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a huge range and FREE tracked UK delivery on ALL orders.

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a huge range and FREE tracked UK delivery on ALL orders.

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a huge range and FREE tracked UK delivery on ALL orders.

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Book SynopsisThis text contains information on over 250 solvents. It answers key questions including; What hazards are connected with the use of a specific solvent? How can the molecular order of a solvent be described? Is water a unique solvent? Which solvent should be selected for my application?Table of ContentsSolvent Effects. Physical Properties of Solvents. Chemical Properties of Solvents. Applications. Index.

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Book SynopsisThe Viologens Physicochemical Properties, Synthesis and Applications of the Salts of 4,4''-Bipyridine Paul M. S. Monk Manchester Metropolitan University, UK Viologens are salts of 4,4''-bipyridine and are used in such fields as herbicides, electrochromism, solar energy conversion, molecular electronics and supramolecular chemistry. The Viologens is a comprehensive overview of the nature and physicochemical properties of the viologens and details the science behind the applications. Following a broad, discursive and self contained introduction to viologen chemistry, subsequent chapters develop the theory and present a detailed review of the most important properties and concepts in this field. A chapter on viologen synthesis is also included. This book is aimed at researchers in physical and organic chemistry, physics, materials science, biology and environmental engineering.Table of ContentsIntroduction and Overview. Synthesis of Viologens. Spectroscopic Properties of Viologen Species. The Structure of Bipyridilium Species. The Dication: Charge-transfer Equilibria. The Radical Cation: Dimer Formation. The Di-Reduced Bipyridilium Species: The Comproportionation Reaction. Adsorption of the Viologens. Electrochemistry and Electron-transfer Reactions. Photochemistry of the Viologens and Solar-energy Conversion. Electron Mediation, Herbicidal Activity and Toxicity. Electrochromism in Viologen-based Systems. Solid-state Conductivity and use of Viologens in Molecular Electronics. Supramolecular and Self Assembly Chemistry of the Viologens. Indexes.

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Book SynopsisResonance Energy Transfer The resonance transfer of energy between molecules, or between sites within a large molecule, plays a central role in many areas of modern chemistry and physics. In biophysics, for example, this process defines the migration of excitation energy within photosynthetic systems (commonly the Frster mechanism).Table of Contents1. Resonance energy transfer in proteins; introduction; some basic considerations; a short history of FRET determinations; the components of the Foorster equation; quantum yield; determining spectral overlap; steady state or time-resolved measurements?; resonance energy transfer using intrinsic amino acids; homotransfer between intrinsic probes; heterotransfer; the range of distances determined by resonance energy transfer; precise location of resonance energy transfer probes; properties of probes; labeling specific residues in proteins; resonance energy transfer experiments using lanthanide ions; measurements in radially symmetrical systems; comparison with crystallographic distances; using resonance energy transfer to constrain molecular models; resonance energy transfer with single fluorophores: new wave experiments; intramolecular energy transfer in proteins bound to membranes; green fluorescent protein; resonance energy transfer and biosensors: a new and promising technique; shortcomings; the future of FRET; summary; dedication; acknowledgements; references. 2. Unified theory and radiative and raditionless energy transfer; introduction; background; the basis of the unified theory; spectral features; refraction and dissipation; dynamics of energy transfer between a pair of molecules in a dielectric medium; conclusion; appendix A: Heitler-MA method for analysis of the transition operator; Appendix B: modified approach to the transition operator; references. 3. Dynamics of radiative transport; introduction; overview of atomic and molecular radiative transport; the Holstein-Biberman equation; multiple scattering representation; stochastic approach; combined radiative and nonradiative transport; conclusion; appendix A: probablitity of emission of a photon between t + dt for an nth generation molecule; appendix B: depolarization factor for radiative transferaccording to classical electrodynamics; references. 4. Orientational aspects in pair energy transfer; introduction; Kappa-squared and probability, Kappa-squared and anisotropy; notes on the effects of order and motion; acknowledgements; references. 5. Polarization in molecular complexes with incoherent energy transfer; introduction; interaction of light with single molecules or chromophores; bichromophore molecular complexes; trichromophore complexes; multichromophore complexes with C3 symmetry; conclusion; appendix A; appendix B; appendix C; appendix D; references. 6. Theory of coupling in multichromophoric systems; introduction; reactant and product states: LMO model; the origin of coupling matrix elements; paradigmatic results; coulombic coupling; superexchange; interpretation of steady state spectra; calculation of couplings; acknowledgements; references. 7. Exciton annihilation in molecular aggregates; introduction; theory; applications; discussion; acknowledgements; references. 8. Energy transfer and localization: applications to photosynthetic systems; introduction; optical properties of dimers and aggregates; energy and localization in antenna complexes and reaction centers; acknowledgements; references. 9.Excitation energy transfer in photosynthesis; introduction; the structure of light-harvesting complexes; the mechanism of energy transfer and trapping in photosynthesis; dynamics of excitation energy transfer; conclusions; acknowledgements; references. 10. The Fenna-Matthews-Olson protein: a strongly coupled photosynthetic antenna; introduction; steady state spectroscopy; FMO exciton simulations; FMO primary processes; epilog and future prospects; acknowledgements; references. 11. Use of a Monte carlo method in the problem of energy migration in molecular complexes; introduction; an illustration of Monte Carlo calculations in the problem of fluorescence decay; energy transfer in CME: major algorithm; applications of monte Carlo simulations; conclusion; acknowledgements; references. Index

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Book SynopsisA comprehensive history of "happenstance plants" in American urban environments. Beginning in the late nineteenth century and continuing to the present, Falck examines the proliferation, perception, and treatment of weeds in metropolitan centers from Boston to Los Angeles.

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Book SynopsisThis book provides an essential guide and reference source for those working in all areas of heritage conservation.Trade ReviewA detailed read of this book provides new and interesting information even for a veteran conservator of shipwreck materials...a wonderful commentary on contemporary collection practices including materials such as leather, stone, plastics and wall paintings. * The Nautical Archaeology Society, 2007, 211-212 (Ian MacLeod) *A useful tool for students.......This book should definitely be of great use for conservators and conservations scientists during their professional life. * Chemistry World, July 2007, 64 (Lore Troalen) *I can envisage this book being relevant to these museum students and a range of heritage disciplines. The Book will also serve the needs of conservation professionals seeking well researched accessible information on materials....general reader with basic science knowledge should have no difficulty in following the text.A good mix of theoretical and practical perspectives.Throughout there is a great deal of 'how to' and 'how not to' field-tested advice. I fully expect that it will have a long life on the shelves of graduates, professionals and science enthusiasts. * Chemistry and Industry, 25 June 2007 (Yvette Staelens) *It brings together a thorough description of wide range of heritage materials in one comprehensive volume.... a very good introduction to conservation science. * Materials Today, June 2007, Vol.10.No.6 (Daniel Vella) *Table of ContentsPREFACE; CHAPTER ONE: INTRODUCTION; Cultural Heritage: The Archaeologist, The Conservator And The Public - An Essential Coalition; The Archaeologist; The Conservador; From Discovery to Display; Special problems of underwater recovery; The raising of the Mary Rose - a case study; Preservation of the evidence - a multi-discipline task; Conservation with a purpose; Museums - the past into the future; REFERENCES AND FURTHER READING; CHAPTER TWO: METHODS IN CONSERVATION; INTRODUCTION; PRELIMINARY EXAMINATION; ANALYTICAL METHODS; Interaction of radiation with matter; Interaction of elemental particles with matter; Dating Methods; DIAGNOSIS OF DETERIORATION PROCESSES; CONSERVATION TREATMENTS; PREVENTIVE CONSERVATION; REFERENCES AND FURTHER READING; CHAPTER THREE: PAPER; THE CONSTITUENTS OF PAPER; Fibres; Paper size; THE DIRECTIONAL PROPERTIES OF PAPER; HOW PAPER INTERACTS WITH WATER; DETERIORATION OF PAPER; Acid-catalysed hydrolysis of cellulose; Oxidation of cellulose; DEACIDIFICATION; BLEACHING AND WASHING OF PAPER TO REMOVE; DISCOLOURATION; ACCELERATED AGEING TESTS; SAFE ENVIRONMENTS FOR PAPER; METHODS FOR MONITORING THE DETERIORATION OF PAPER; Physical measurements; Chemical methods; CHARACTERISATION OF PAPER; REFERENCES AND FURTHER READING; CHAPTER FOUR: TEXTILES; THE VARIETY OF TEXTILES; TEXTILE MATERIALS; CASE STUDY I: LINEN FIBRES AND THE VICTORY SAIL; The chemical composition and microstructure of linen; The mechanical performance of the Victory sail; Degradation of cellulosic fibres; Humidity and heat; Acid and alkaline hydrolysis; Photolytic damage; Biological degradation; Acidity measurements on the Victory sail; Conservation and display of the Victory fore topsail; CASE STUDY II: SILK FIBRES AND THE SHACKLETON ENSIGN; The chemical composition and microstructure of silk; Silk processing for use as a textile fibre; The condition of the Shackleton ensign; Assessing the condition of silk by microanalytical techniques; Degradation of silk fibres; CASE STUDY III: WOOL FIBRES AND THE TREE OF JESSE TAPESTRY; The Chemical Composition and Microstructure of Wool; Wool as a Textile Fibre; Degradation of Wool; Conservation and Treatment of the Tree of Jesse Tapestry; ENDNOTE; ACKNOWLEDGEMENTS; REFERENCES AND FURTHER READING; CHAPTER FIVE: LEATHER; THE NATURE AND PROPERTIES OF LEATHER; Introduction; Criteria which define tannage; Collagen; Tanning materials; Conclusion; THE MANUFACTURE OF LEATHER; Introduction; Vegetable tanning processes; Alum tawing; Oil tannage; Fur dressing; THE DETERIORATION OF LEATHER; Introduction; Physical deterioration; Biological deterioration; Chemical deterioration; CONSERVATION TECHNIQUES; Introduction; Biological deterioration; Chemical deterioration; Conclusions; REFERENCES; REFERENCES AND FURTHER READING; CHAPTER SIX: METALS; INTRODUCTION; Extraction; Metallurgy; CORROSION; FIELD TREATMENT AND TRANSPORTATION; CONSERVATION; Acid pickling; Aqueous washing; Electrolytic conservation; Hydrogen reduction; STABILISATION AND CONSOLIDATION; REFERENCES AND FURTHER READING; CHAPTER SEVEN: GLASS AND CERAMICS; INTRODUCTION; DETERIORATION AND CONSERVATION OF GLASS; HISTORY, STRUCTURE AND PHYSICAL PROPERTIES; History of glass-making; Structure, technology and physical properties; DEGRADATION MECHANISMS AND PHENOMENA; Basic reactions in water; Degradation of objects indoors; Weathering of stained glass windows; Degradation of archaeological glasses; RESTORATION AND CONSERVATION; Cleaning methods; Coatings, consolidants, adhesives; Conditions for storage and display; DETERIORATION AND CONSERVATION OF CERAMICS; SUMMARY AND CONCLUSIONS; REFERENCES AND FURTHER READING; CHAPTER EIGHT: CONSERVATION SCIENCE OF PLASTICS; PLASTICS IN HERITAGE COLLECTIONS; THE CHEMISTRY AND PHYSICS OF PLASTICS; Preparation of polymers; Additives; Shaping plastics; IDENTIFICATION OF PLASTICS; Simple tests; Instrumental analytical techniques; DEGRADATION OF PLASTICS; Degradation of cellulose nitrate; Degradation of cellulose acetate; Degradation of plasticized PVC; Degradation of polyurethane foam; CONSERVATION OF PLASTICS; Conservation of cellulose nitrate; Conservation of cellulose acetate; Conservation of polyurethane foam; REFERENCES AND FURTHER READING; CHAPTER NINE: STONE; INTRODUCTION; THE DEGRADATION 'EQUATION'; Material; Process; Environment; Limestone Weathering in an Urban Environment: Illustration of the Interaction of the Three Factors; CONSERVATION PRACTICES; Identification; Prevention; Barriers to Agents of Degradation; Removal of Degradation; Consolidation; REPLACEMENT; CONCLUSION; REFERENCES AND FURTHER READING; CHAPTER TEN: WALL PAINTINGS - ASPECTS OF DETERIORATION AND RESTORATION; INTRODUCTION; WALL PAINTINGS AS AN INTEGRAL PART OF BUILDINGS; DAMAGING PROCESSES; Deterioration by soluble salts; Deterioration by microorganisms; Parameters enhancing microbial colonization; Biodeterioration; CLEANING AND CONSOLIDATION; Consolidation; Cleaning methodologies; SUMMARY; REFERENCES AND FURTHER READING; CHAPTER ELEVEN: BIODETERIORATION OF ANCIENT TIMBERS; THE BIODETERIOGENS; Marine wood-boring animals; Teredinids; Erosion bacteria; Tunnelling bacteria; Cavitation bacteria; Bacterial symbionts of shipworm; Soft rot fungi; Basidiomycete fungi; Insect borers; WOOD STRUCTURE; Archaeological wood recovered from the marine environment; Properties and condition of waterlogged archaeological wood; STORAGE OF ARCHAEOLOGICAL WOOD; Wrapping in polyethylene bags or sheeting; Advice to conservators; Storage of large wooden artefacts; The storage of large wooden structures (Mary Rose Hull); Reburial; CONSERVATION OF ARCHAEOLOGICAL WOOD; Definition and aims; Lumen filling treatments; Bulking treatments; Surface coatings; CONSERVATION METHODS; Removal of mineral inclusions; Microbial activity; Polyethylene glycol method; In situ polymerisation with radiation curing monomers and resins; Drying following conservation treatment; CONCLUSIONS; REFERENCES AND FURTHER READING; CHAPTER TWELVE: IN-SITU PRESERVATION OF WATERLOGGED ARCHAEOLOGICAL SITES; IN SITU PRESERVATION; ENVIRONMENTAL MONITORING; Level; Pore water composition; Redox potential; pH; DETERIORATION OF MODERN MATERIALS ANALOGOUS TO ARTEFACTS; WHAT DOES ENVIRONMENTAL MONITORING TELL US IN ITSELF?; Case Study: In situ preservation of the site of Nydam; Deterioration and protection of wooden Artefacts; Deterioration of iron artefacts; SUMMARY; REFERENCES AND FURTHER READING

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Book SynopsisTo appreciate the chemistry and physical properties of complexes of the transition series, an understanding of metal-ligand interactions applied to complexes of the d-block is needed. Metal Ligand Bonding aims to provide this through an accessible, detailed, non-mathematical approach. Initial chapters detail the crystal-field model, using it to describe the use of magnetic measurements to distinguish complexes with different electronic configurations and geometries. Subsequent chapters look at the molecular orbital theory of transition metal complexes using a pictorial approach. Bonding in octahedral complexes is explored and electronic spectra and magnetic properties are given extensive coverage. The material addressed in this book forms the foundation of undergraduate lecture courses on d-block chemistry and facilitates learning through various key features, including: full colour diagrams; in-text questions with answers; revision exercises and clearly defined learning outcomes to encourage a reflective approach to study; an associated website; and experimental data and observations from everyday life. A basic knowledge of atomic and molecular orbitals as applied to main group elements is assumed.Trade Reviewtext is very readable and adopts a question and answer style throughout to emphasise the key points....an approachable book and a useful revision aid. * Chemical Educator, Vol.9, No.4, 2004 (Andrew D Burrows) *A very good didactic structure, and it is a pleasure to work through it.......can be recommended unreservedly as an introduction to coordination chemistry. * Angewante Chemie International Edition, 2004, 43, 4393-4395 (Siegfried Schindler) *A joy to read....good value for money and should be required reading for all undergraduate chemists. * Education in Chemistry, March 2005 Issue (C F Murray) *"The quality of presentation is high, as might be expected from the Open University, and colour is used to good effect in the numerous diagrams which illustrate the subject matter ... Without transition metal compounds life as we know it would not be possible. This book provides the opportunity to develop an understanding of this fascinating area of chemistry." * Dr Chris J Jones, The University of Birmingham *"... I will certainly be dipping into the text for future inspiration when setting coursework and examinations... " * Chemistry World, Vol 1, No 4, April 2004, p 59 *Table of ContentsIntroduction; Crystal-Field Theory; Electronic Spectra of Octahedral Complexes; Substituted and Distorted Octahedral Complexes, and Square-Planar Complexes; Tetrahedral Complexes; Magnetism and the Magnetic Properties of Transition-Metal Complexes; Summary of Crystal-Field Theory; Molecular Orbital Theory of Transition-Metal Complexes; Bonding in Octahedral Complexes; Bonding in Complexes of D4h Symmetry; Bonding in Tetrahedral Complexes; Complexes of other Symmetry; Complexes with Two Metal Atoms; Charge-Transfer Bands in the Electronic Spectra of Transition-Metal Complexes; Revision Exercise; Learning Outcomes; Answers to Questions; Answers to Revision Exercise Questions; Index.

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Book SynopsisEquilibria and Kinetics of Biological Macromolecules provides readers with an understanding of the biophysics of macromolecules.Table of ContentsPreface xix Acknowledgments xxi PART 1 BASIC PRINCIPLES 1 1. Thermodynamics 3 2. Four Basic Quantum Mechanical Models of Nuclear and Electronic Motion: A Synopsis 35 3. Molecular Structure and Interactions 51 4. Water and the Hydrophobic Effect 77 PART 2 STATISTICAL MECHANICS: THE MOLECULAR BASIS OF THERMODYNAMICS 91 5. The Molecular Partition Function 93 6. System Ensembles and Partition Functions 111 7. Sampling Molecular Systems with Simulations 137 PART 3 BINDING TO MACROMOLECULES 161 8. Binding Equilibria 163 9. Thermodynamics of Molecular Interactions 185 10. Elements of Statistical Mechanics of Liquids and Solutions 197 11. Analysis of Binding Equilibria in Terms of Partition Functions 213 12. Coupled Equilibria 223 13. Allosteric Function 239 14. Charged Groups: Binding of Hydrogen Ions, Solvation, and Charge–Charge Interactions 255 PART 4 CONFORMATIONAL STABILITY AND CONFORMATION CHANGE 277 15. Some Elements of Polymer Physics 279 16. Helix-Coil Equilibria 291 17. Protein Unfolding Equilibria 311 18. Elasticity of Biological Materials 347 PART 5 KINETICS AND IRREVERSIBLE PROCESSES 357 19. Kinetics 359 20. Kinetics of Protein Folding 389 21. Irreversible and Stochastic Processes 415 APPENDICES 437 Index 491

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Book SynopsisInorganic Chemistry for Geochemistry and Environmental Sciences: Fundamentals and Applications discusses the structure, bonding and reactivity of molecules and solids of environmental interest, bringing the reactivity of non-metals and metals to inorganic chemists, geochemists and environmental chemists from diverse fields. Understanding the principles of inorganic chemistry including chemical bonding, frontier molecular orbital theory, electron transfer processes, formation of (nano) particles, transition metal-ligand complexes, metal catalysis and more are essential to describe earth processes over time scales ranging from 1 nanosec to 1 Gigayr. Throughout the book, fundamental chemical principles are illustrated with relevant examples from geochemistry, environmental and marine chemistry, allowing students to better understand environmental and geochemical processes at the molecular level. Topics covered include:Thermodynamics and kinetics of redoxTable of ContentsAbout the Author xv Preface xvii Companion Website xix 1. Inorganic Chemistry and the Environment 1 1.1 Introduction 1 1.1.1 Energetics of Processes 1 1.2 Neutron–Proton Conversion 3 1.3 Element Burning Reactions – Buildup of Larger Elements 4 1.4 Nuclear Stability and Binding Energy 5 1.4.1 The “r” and “s” Processes 6 1.5 Nuclear Stability (Radioactive Decay) 8 1.6 Atmospheric Synthesis of Elements 8 1.7 Abundance of the Elements 8 1.7.1 The Cosmos and the Earth’s Lithosphere 8 1.7.2 Elemental Abundance (Atmosphere, Oceans, and Human Body) 10 1.8 Scope of Inorganic Chemistry in Geochemistry and the Environment 17 1.8.1 Elemental Distribution Based on Photosynthesis and Chemosynthesis 17 1.8.2 Stratified Waters and Sediments – the Degradation of Organic Matter by Alternate Electron Acceptors 19 1.9 Summary 21 1.9.1 Environmental Inorganic Chemistry 22 References 22 2. Oxidation–Reduction Reactions (Redox) 24 2.1 Introduction 24 2.1.1 Energetics of Half Reactions 24 2.1.2 Standard Potential and the Stability of a Chemical Species of an Element 26 2.2 Variation of Standard Potential with pH (the Nernst Equation) 29 2.3 Thermodynamic Calculations and pH Dependence 29 2.4 Stability Field of Aqueous Chemical Species 31 2.5 Natural Environments 32 2.6 Calculations to Predict Favorable Chemical Reactions 32 2.6.1 Coupling Half-Reactions 34 2.6.2 One-Electron Oxygen Transformations with Fe2+ and Mn2+ to Form O2− 35 2.7 Highly Oxidizing Conditions 38 2.7.1 Ozonolysis Reactions 38 2.7.2 Atmospheric Redox Reactions 39 Appendix 2.1 Gibbs Free Energies of Formation 43 References 43 3. Atomic Structure 45 3.1 History 45 3.2 The Bohr Atom 46 3.3 The Schrodinger Wave Equation 47 3.4 Components of the Wave Function 50 3.4.1 Radial Part of the Wave Function, R(r) 50 3.4.2 Angular Part of the Wavefunction Ylml(𝜃, 𝜙) and Atomic Orbitals 54 3.5 The Four Quantum Numbers 56 3.6 The Polyelectronic Atoms and the Filling of Orbitals for the Atoms of the Elements 58 3.7 Aufbau Principle 61 3.8 Atomic Properties 62 3.8.1 Orbitals Energies and Shielding 62 3.8.2 Term Symbols: Coupling of Spin and Orbital Angular Momentum 63 3.8.3 Periodic Properties – Atomic Radius 67 3.8.4 Periodic Properties – Ionization Potential (IP) 67 3.8.5 Periodic Properties – Electron Affinity (EA) 71 3.8.6 Periodic Properties – Electronegativity (𝜒) 74 3.8.7 Periodic Properties – Hardness (𝜂) 75 References 77 4. Symmetry 79 4.1 Introduction 79 4.2 Symmetry Concepts 79 4.2.1 Symmetry Operation 79 4.2.2 Symmetry Element 79 4.2.3 Symmetry Elements and Operations 80 4.3 Point Groups 84 4.3.1 Special Groups and Platonic Solids/Polyhedra 85 4.3.2 Examples of the Use of the Scheme for Determining Point Groups 88 4.4 Optical Isomerism and Symmetry 92 4.4.1 Dichloro-Allene Derivatives (C3H2Cl2) 92 4.4.2 Tartaric Acid 93 4.4.3 Cylindrical Helix Molecules 93 4.5 Fundamentals of Group Theory 93 4.5.1 C2v Point Group 95 4.5.2 Explanation of the Character Table 96 4.5.3 Generation of the Irreducible Representations (C2v Case) 97 4.5.4 Notation for Irreducible Representations 97 4.5.5 Some Important Properties of the Characters and their Irreducible Representations 98 4.5.6 Nonindependence of x and y Transformations (Higher Order Rotations) 98 4.6 Selected Applications of Group Theory 101 4.6.1 Generation of a Reducible Representation to Describe a Molecule 101 4.6.2 Determining the IR and Raman Activity of Vibrations in Molecules 104 4.6.3 Determining the Vibrational Modes of Methane, CH4 105 4.6.4 Determining the Irreducible Representations and Symmetry of the Central Atom’s Atomic Orbitals that Form Bonds 107 4.7 Symmetry Adapted Linear Combination (SALC) of Orbitals 111 4.7.1 Sigma Bonding with Hydrogen as Terminal Atom 111 4.7.2 Sigma and Pi Bonding with Atoms Other than Hydrogen as Terminal Atom 114 Appendix 4.1 Some Additional useful Character Tables 120 References 122 5. Covalent Bonding 123 5.1 Introduction 123 5.1.1 Lewis Structures and the Octet Rule 123 5.1.2 Valence Shell Electron Pair Repulsion Theory (VSEPR) 126 5.2 Valence Bond Theory (VBT) 127 5.2.1 H2 and Valence Bond Theory 129 5.2.2 Ionic Contributions to Covalent Bonding 130 5.2.3 Polyatomic Molecules and Valence Bond Theory 131 5.3 Molecular Orbital Theory (MOT) 132 5.3.1 H2 132 5.3.2 Types of Orbital Overlap 137 5.3.3 Writing Generalized Wave Functions 138 5.3.4 Brief Comments on Computational Methods and Computer Modeling 139 5.3.5 Homonuclear Diatomic Molecules (A2) 140 5.3.6 Heteronuclear Diatomic Molecules and Ions (AB; HX) – Sigma Bonds Only 144 5.3.7 Heteronuclear Diatomic Molecules and Ions (AB) – Sigma and Pi Bonds 147 5.4 Understanding Reactions and Electron Transfer (Frontier Molecular Orbital Theory) 150 5.4.1 Angular Overlap 151 5.4.2 H+ +OH− 151 5.4.3 H2 +D2 152 5.4.4 H2 +F2 153 5.4.5 H2 +C2 154 5.4.6 H2 +N2 (also CO+H2) 154 5.4.7 Dihalogens as Oxidants 156 5.4.8 O2 as an Oxidant and its Reaction with H2S and HS− 157 5.5 Polyatomic Molecules and Ions 161 5.5.1 H3+ Molecular Cation 161 5.5.2 BeH2 – Linear Molecule with Sigma Bonds Only 163 5.5.3 H2O – Angular Molecule with Sigma Bonds Only 165 5.6 Tetrahedral and Pyramidal Species with Sigma Bonds only (CH4, NH4+, SO42−) 168 5.6.1 CH4 168 5.6.2 NH3 (C3v) 170 5.6.3 BH3 and the Methyl Cation, CH3+ (D3h) 172 5.7 Triatomic Compounds and Ions Involving 𝜋 Bonds (A3, AB2, and ABC) 175 5.7.1 A3 Linear Species 175 5.7.2 AB2 Linear Species CO2 (COS and N2O) 178 5.7.3 O3, NO2−, and SO2 (Angular Molecules) 180 5.8 Planar Species (BF3, NO3−, CO32−, SO3) 182 Appendix 5.1 Bond Energies for Selected Bonds 184 Appendix 5.2 Energies of LUMOs and HOMOs 185 References 186 6. Bonding in Solids 189 6.1 Introduction 189 6.2 Covalent Bonding in Metals: Band Theory 189 6.2.1 Atomic Orbital Combinations for Metals 189 6.2.2 Metal Conductors 191 6.2.3 Semiconductors and Insulators 191 6.2.4 Fermi Level 193 6.2.5 Density of States (DOS) 194 6.2.6 Doping of Semiconductors 195 6.2.7 Structures of Solids 196 6.3 Ionic Solids 200 6.3.1 Solids AX Stoichiometry 200 6.3.2 Solids with Stoichiometry of AX2, AO2, A2O3, ABO3 (Perovskite), AB2O4 (Spinel) 203 6.3.3 Crystal Radii 205 6.3.4 Radius Ratio Rule 205 6.3.5 Lattice Energy 207 6.3.6 Born–Haber Cycle 209 6.3.7 Thermal Stability of Ionic Solids 210 6.3.8 Defect Crystal Structures 212 6.4 Nanoparticles and Molecular Clusters 214 References 217 7. Acids and Bases 219 7.1 Introduction 219 7.2 Arrhenius and Bronsted–Lowry Definitions 219 7.3 Hydrolysis of Metal–Water Complexes 222 7.4 Hydration of Anhydrous Acidic and Basic Oxides 223 7.4.1 Acidic Oxides 223 7.4.2 Basic Oxides 224 7.4.3 Amphoteric Oxides 224 7.5 Solvent System Definition 224 7.5.1 Leveling Effect 225 7.6 Gas Phase Acid–Base Strength 225 7.6.1 H3+ as a Reactant 227 7.7 Lewis Definition 227 7.7.1 MOT 228 7.7.2 Molecular Iodine Adducts or Complexes as Examples 228 7.7.3 Thermodynamics of Lewis Acid–Base Reactions 229 7.7.4 Lewis Acid–Base Reactions of CO2 and I2 with Water and Hydroxide Ion 230 7.7.5 Lewis Acid–Base Competitive Reactions 232 7.8 Classification of Acids and Bases 232 7.8.1 Irving–Williams Stability Relationship for the First Transition Metal Series 232 7.8.2 Class “a” and “b” Acids and Bases 233 7.8.3 Hard Soft Acid Base (HSAB) Theory 233 7.9 Acid–Base Properties of Solids 235 References 235 8. Introduction to Transition Metals 237 8.1 Introduction 237 8.2 Coordination Geometries 237 8.3 Nomenclature 240 8.3.1 Complex Ion is Positive 241 8.3.2 Complex Ion is Negative 242 8.3.3 Complex Ion with Multiple Ligands 242 8.3.4 Complex Ion with Ligand that can Bind with More Than One Atom (Ambidentate) 243 8.3.5 Complex Ion with Multidentate Ligands 243 8.3.6 Two Complex Ions with a Bridging Ligand 243 8.4 Bonding and Isomers for Octahedral Geometry 243 8.4.1 Ionization Isomerism 244 8.4.2 Hydrate (Solvate) Isomers 244 8.4.3 Coordination Isomerism 245 8.4.4 Linkage Isomerism 245 8.4.5 Geometrical Isomerism – Four Coordination 246 8.4.6 Optical Isomerism in Octahedral Geometry 248 8.5 Bonding Theories for Transition Metal Complexes 250 8.5.1 Valence Bond Theory 251 8.5.2 Crystal Field Theory 252 8.6 Molecular Orbital Theory 268 8.6.1 Case 1 – Octahedral Geometry (Sigma Bonding Only) 268 8.6.2 Case 2 – Octahedral Geometry (Sigma Bonding Plus Ligand 𝜋 Donor) 271 8.6.3 Case 3 – Octahedral Geometry (Sigma Bonding Plus Ligand 𝜋 Acceptor) 272 8.7 Angular Overlap Model 274 8.7.1 AOM and 𝜋 Ligand Donor Bonding 277 8.7.2 AOM and 𝜋 Ligand Acceptor Bonding 278 8.7.3 MOT, Electrochemistry, and the Occupancy of Electrons in d Orbitals in Oh 278 8.7.4 AOM and Other Geometries 279 8.8 More on Spectroscopy of Metal–Ligand Complexes 281 8.8.1 Charge Transfer Electronic Transitions 282 8.8.2 Electronic Spectra, Spectroscopic Terms, and the Energies of the Terms for d→d Transitions 283 8.8.3 Energy and Spatial Description of the Electron Transitions Between t2g and eg * Orbitals 296 8.8.4 More Details on Correlation Diagrams 297 8.8.5 Luminescence 299 8.8.6 Magnetism and Spin Crossover in Octahedral Complexes and Natural Minerals 301 8.8.7 Note about f Orbitals in Cubic Symmetry (Oh) 303 References 303 9. Reactivity of Transition Metal Complexes: Thermodynamics, Kinetics and Catalysis 305 9.1 Thermodynamics Introduction 305 9.1.1 Successive Stability Constants on Water Substitution 305 9.1.2 The Chelate Effect 307 9.2 Kinetics of Ligand Substitution Reactions 308 9.2.1 Kinetics of Water Exchange for Aqua Complexes 310 9.2.2 Intimate Mechanisms for Ligand Substitution Reactions 310 9.2.3 Kinetic Model and Activation Parameters 311 9.2.4 Dissociative Versus Associative Preference for Octahedral Ligand Substitution Reactions 314 9.2.5 Stoichiometric Mechanisms 315 9.2.6 Tests for Reaction Mechanisms 320 9.3 Substitution in Octahedral Complexes 321 9.3.1 Examples of Dissociative Activated Mechanisms 321 9.3.2 Associative Activated Mechanisms 322 9.4 Intimate Mechanisms Affected by Steric Factors (Dissociative Preference) 324 9.4.1 Intimate Mechanisms Affected by Ligands in Cis versus Trans Positions (Dissociative Preference) 324 9.4.2 Base Hydrolysis 325 9.5 Intimate versus Stoichiometric Mechanisms 327 9.6 Substitution in Square Planar Complexes (Associative Activation Predominates) 328 9.6.1 Effect of Leaving Group 330 9.6.2 Effect of Charge 330 9.6.3 Nature of the Intermediate – Electronic Factors 330 9.6.4 Nature of the Intermediate – Steric Factors 331 9.7 Metal Electron Transfer Reactions 332 9.7.1 Outer Sphere Electron Transfer 333 9.7.2 Cross Reactions 337 9.7.3 Inner Sphere Electron Transfer 339 9.8 Photochemistry 341 9.8.1 Redox 341 9.8.2 Photosubstitution Reactions d→d 341 9.8.3 LMCT and Photoreduction 342 9.8.4 MLCT Simultaneous Substitution and Photo-Oxidation Redox 342 9.9 Effective Atomic Number (EAN) Rule or the Rule of 18 342 9.10 Thermodynamics and Kinetics of Organometallic Compounds 344 9.11 Electron Transfer to Molecules during Transition Metal Catalysis 345 9.12 Oxidation Addition (OXAD) and Reductive Elimination (Redel) Reactions 346 9.13 Metal Catalysis 347 9.13.1 OXO or Hydroformylation Process 348 9.13.2 Heck Reaction 350 9.13.3 Methyl Transferases 350 9.13.4 Examples of Abiotic Organic Synthesis (Laboratory and Nature) 351 9.13.5 The Haber Process Revisited 353 References 353 10. Transition Metals in Natural Systems 356 10.1 Introduction 356 10.2 Factors Governing Metal Speciation in the Environment and in Organisms 356 10.3 Transition Metals Essential for Life 358 10.4 Important Environmental Iron and Manganese Reactions 359 10.4.1 Oxidation of Fe2+ and Mn2+ by O2 – Environmentally Important Metal Electron Transfer Reactions 360 10.4.2 Redox Properties of Iron–Ligand Complexes 363 10.4.3 Metal Ions Exhibiting Outer Sphere Electron Transfer 364 10.5 Oxygen (O2) Storage and Transport 364 10.5.1 Hemoglobin 365 10.5.2 Hemocyanin and Hemerythrin 368 10.6 Oxidation of CH4, Hydrocarbons, NH4+ 368 10.6.1 Cytochrome P450: An Example of Cytochrome (Heme – O2) Redox Chemistry 369 10.6.2 Conversion of NH4+ to NO3− (Nitrification or Aerobic Ammonium Oxidation) 371 10.7 Oxygen Production in Photosynthesis 372 References 374 11. Solid Phase Iron and Manganese Oxidants and Reductants 377 11.1 Introduction 377 11.2 Reduction of Solid MnO2 and Fe(OH)3 by Sulfide 377 11.2.1 Fe(III) and Mn(IV) Electron Configurations 378 11.2.2 MnO2 Reaction with Sulfide 379 11.2.3 Fe(OH)3 Reaction with Sulfide 382 11.3 Pyrite, FeS2, Oxidation 384 11.3.1 Pyrite Reacting with O2 384 11.3.2 Pyrite Reacting with Soluble Fe(III) 385 11.3.3 Pyrite Reacting with Dihalogens and Cr2+ 387 References 388 12. Metal Sulfides in the Environment and in Bioinorganic Chemistry 390 12.1 Introduction 390 12.2 Idealized Molecular Reaction Schemes from Soluble Complexes to ZnS and CuS Solids 391 12.3 Nanoparticle Size and Filtration 394 12.4 Ostwald Ripening versus Oriented Attachment 394 12.5 Metal Availability and Detoxification for MS Species 396 12.6 Iron Sulfide Chemistry 396 12.6.1 FeSmack (Mackinawite) 396 12.6.2 FeSmack Conversion to Pyrite, FeS2 397 12.6.3 FeS as a Catalyst in Organic Compound Formation 400 12.6.4 FeS as an Electron Transfer Agent in Biochemistry 400 12.7 More on the Nitrogen Cycle (Nitrate Reduction, Denitrification, and Anammox) 402 Appendix 12.1 PbS Nanoparticle Model and Size Ranges of Natural Materials 404 References 404 13. Kinetics and Thermodynamics of Metal Uptake by Organisms 406 13.1 Introduction 406 13.1.1 Conditional Metal–Ligand Stability Constants 407 13.1.2 Thermodynamic Metal–Ligand Stability Constants 409 13.2 Metal Uptake Pathways 410 13.2.1 Ion Channels for Potassium 411 13.2.2 Metal Uptake by Cells via Ligands on Membranes 413 13.2.3 Evaluation of kf , kd, and KcondM′L′ from Laboratory and Natural Samples 418 References 420 Index 421

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Book SynopsisOrganic chemistry is required coursework for degrees in life, food, and medical sciences. To help the students discouraged by the belief that this topic cannot be mastered without significant memorization, Arrow Pushing in Organic Chemistry serves as a handy supplement for understanding the subject. Includes new chapters, an expanded index, and additional problem sets complete with detailed solutions Focuses on understanding the mechanics and logic of organic reaction mechanisms Introduces ionic and non-ionic reactive species and reaction mechanisms Teaches strategies to predict reactive species, sites of reactions, and reaction products Provides a solid foundation upon which organic chemistry students can advance with confidenceTable of ContentsPREFACE xi ACKNOWLEDGEMENTS xiii ABOUT THE AUTHOR xv 1. Introduction 1 1.1 Definition of Arrow-Pushing 1 1.2 Functional Groups 5 1.3 Nucleophiles and Leaving Groups 7 1.4 Summary 8 Problems 9 2. Free Radicals 19 2.1 What Are Free Radicals? 19 2.2 How Are Free Radicals Formed? 21 2.2.1 Free Radical Initiators 22 2.2.2 Electron Transfer 23 2.3 Free Radical Stability 23 2.4 What Types of Reactions Involve Free Radicals? 25 2.4.1 Halogenation Reactions 26 2.4.2 Polymerization Reactions 28 2.4.3 Oxidation Reactions 30 2.5 Summary 31 Problems 32 3. Acids 37 3.1 What Are Acids? 37 3.2 What Is Resonance? 38 3.3 How Is Acidity Measured? 41 3.4 Relative Acidities 42 3.5 Inductive Effects 47 3.6 Inductive Effects and Relative Acidities 49 3.7 Relative Acidities of Hydrocarbons 50 3.8 Summary 51 Problems 52 4. Bases and Nucleophiles 61 4.1 What Are Bases? 61 4.2 What Are Nucleophiles? 66 4.3 Leaving Groups 70 4.4 Summary 70 Problems 71 5. SN2 Substitution Reactions 81 5.1 What Is An SN2 Reaction? 81 5.2 What Are Leaving Groups? 83 5.3 Where Can SN2 Reactions Occur? 84 5.4 SN2′ Reactions 85 5.5 Summary 88 Problems 89 6. SN1 Substitution Reactions 97 6.1 What Is An SN1 Reaction? 97 6.2 How Are SN1 Reactions Initiated? 98 6.3 The Carbocation 99 6.3.1 Molecular Structure and Orbitals 100 6.3.2 Stability of Carbocations 103 6.4 Carbocation Rearrangements 105 6.4.1 1,2-Hydride Shifts 105 6.4.2 1,2-Alkyl Shifts 106 6.4.3 Preventing Side Reactions 109 6.5 Summary 109 Problems 110 7. Elimination Reactions 115 7.1 E1 Eliminations 115 7.2 E1cB Eliminations 118 7.3 E2 Eliminations 120 7.4 How Do Elimination Reactions Work? 121 7.5 E1cB Eliminations Versus E2 Eliminations 124 7.6 Summary 124 Problems 126 8. Addition Reactions 133 8.1 Addition of Halogens to Double Bonds 133 8.2 Markovnikov’s Rule 135 8.3 Additions to Carbonyls 137 8.3.1 1,2-Additions 137 8.3.2 1,4-Additions 138 8.3.3 Addition–Elimination Reactions 141 8.4 Summary 143 Problems 144 9. Carbenes 153 9.1 What Are Carbenes? 153 9.2 How Are Carbenes Formed? 154 9.3 Reactions with Carbenes 156 9.3.1 Carbene Dimerization 156 9.3.2 Cyclopropanation Reactions 157 9.3.3 O-H Insertion Reactions 161 9.4 Carbenes Versus Carbenoids 162 9.5 Summary 163 Problems 164 10. Pericyclic Reactions 171 10.1 What Are Pericyclic Reactions? 171 10.2 Electrocyclic Reactions 172 10.3 Cycloaddition Reactions 175 10.3.1 The Diels–Alder Reaction 175 10.3.2 The Ene Reaction 178 10.3.3 Dipolar Cycloaddition Reactions 180 10.4 Sigmatropic Reactions 182 10.4.1 The Cope Rearrangement 183 10.4.2 The Claisen Rearrangement 184 10.5 Summary 187 Problems 189 11. Moving Forward 195 11.1 Functional Group Manipulations 195 11.2 Name Reactions 196 11.3 Reagents 208 11.4 Final Comments 208 Problems 209 Appendix 1. pKa Values of Protons Associated with Common Functional Groups 219 Appendix 2. Answers and Explanations to Problems 223 Chapter 1 Solutions 224 Chapter 2 Solutions 234 Chapter 3 Solutions 241 Chapter 4 Solutions 258 Chapter 5 Solutions 270 Chapter 6 Solutions 285 Chapter 7 Solutions 293 Chapter 8 Solutions 303 Chapter 9 Solutions 318 Chapter 10 Solutions 334 Chapter 11 Solutions 347 Appendix 3. Student Reaction Glossary 369 Index 373 Periodic Table of Elements 401

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Book SynopsisBridging the Gap Between Organic Chemistry Fundamentals and Advanced Synthesis Problems Introduction to Strategies of Organic Synthesis bridges the knowledge gap between sophomore-level organic chemistry and senior-level or graduate-level synthesis to help students more easily adjust to a synthetic chemistry mindset. Beginning with a thorough review of reagents, functional groups, and their reactions, this book prepares students to progress into advanced synthetic strategies. Major reactions are presented from a mechanistic perspective and then again from a synthetic chemist's point of view to help students shift their thought patterns and teach them how to imagine the series of reactions needed to reach a desired target molecule. Success in organic synthesis requires not only familiarity with common reagents and functional group interconversions, but also a deep understanding of functional group behavior and reactivity. This book provides clear explanatTable of ContentsPreface xix Acknowlegments xxi CHAPTER 1 Synthetic Toolbox 1: Retrosynthesis and Protective Groups 1 1.1 Retrosynthetic Analysis 3 1.2 Protective Groups 11 CHAPTER 1 Problems Protective Groups 19 CHAPTER 2 Synthetic Toolbox 2: Overview of Organic Transformations 21 2.1 Nucleophiles and Electrophiles 23 2.2 Oxidation and Reduction Reactions 27 CHAPTER 2 Problems Nucleophiles, Electrophiles, and Redox 41 CHAPTER 3 Synthesis of Monofunctional Target Molecules (1-FG TMs) 45 3.1 Synthesis of Alcohols (ROH) and Phenols (ArOH) 47 3.2 Synthesis of Alkyl (RX) and Aryl Halides (ArX) 61 3.3 Synthesis of Ethers (ROR′) 67 3.4 Synthesis of Thiols (RSH) and Thioethers (RSR´) 73 3.5 Synthesis of Amines (RNH2) and Anilines (ArNH2) 77 3.6 Synthesis of Alkenes (R2C¨TCR2) 85 3.7 Synthesis of Alkynes (RC≡CR′) 93 3.8 Synthesis of Alkanes (RH) 97 3.9 Synthesis of Aldehydes and Ketones (RCHO, R2C¨TO) 105 3.10 Synthesis of Carboxylic Acids (RCO2H) 117 3.11 Synthesis of Carboxylic Acid Derivatives 125 CHAPTER 3 Problems 1-FG TMs 139 CHAPTER 4 Synthesis of Target Molecules with Two Functional Groups (2-FG TMs) 143 4.1 Synthesis of β©\Hydroxy Carbonyls and α,β©\Unsaturated Carbonyls 145 4.2 More Enolate Reactions: Synthesis of 1,3©\Dicarbonyls, 1,5©\Dicarbonyls, and Cyclohexenones 157 4.3 “Illogical” 2©\Group Disconnections: Umpolung (Polarity Reversal) 171 CHAPTER 4 Problems 2-FG TMs 183 CHAPTER 5 Synthesis of Aromatic Target Molecules 187 5.1 Electrophilic Aromatic Substitution (ArH + E+ → ArE) 189 5.2 Synthesis of Aromatic TMs via Diazonium Salts (ArN2 + + Nu: → ArNu) 201 5.3 Nucleophilic Aromatic Substitution (ArX + Nu: → ArNu) 205 CHAPTER 5 Problems Aromatic TMs 209 CHAPTER 6 Synthesis of Compounds Containing Rings 211 6.1 Synthesis of Cyclopropanes 213 6.2 Synthesis of Cyclobutanes 215 6.3 Synthesis of Five©\Membered Rings (Radical Cyclization Reactions) 217 6.4 Synthesis of Six©\Membered Rings (Diels–Alder Reaction) 221 CHAPTER 6 Problems Cyclic TMs 231 CHAPTER 7 Predicting and Controlling Stereochemistry 235 7.1 Reactions that Form Racemates 237 7.2 SN2 Mechanism: Backside Attack 243 7.3 Elimination Mechanisms 245 7.4 Additions to Alkenes and Alkynes 247 7.5 Additions to Carbonyls 251 7.6 Additions to Enolates: Aldol Stereochemistry 257 7.7 Enantioselectivity and Asymmetric Syntheses 261 CHAPTER 7 Problems Stereochemistry 269 CHAPTER 8 Transition Metal-Mediated Carbon–Carbon Bond Formation 273 8.1 Transition Metal Coordination Complexes 275 8.2 Organometallic Reaction Mechanisms 283 8.3 Carbonylation and Decarbonylation 291 8.4 (ArX + Alkene → Ar©\Alkene) 295 8.5 Palladium©\Catalyzed Cross©\Coupling Reactions (RX + R′M → R©\R′) 297 8.6 Olefin Metathesis Reactions 303 8.7 Retrosynthesis: Disconnections Based on Metal-Mediated Reactions 307 CHAPTER 8 Problems Transition Metal-Mediated Synthesis 309 SOLUTIONS TO PROBLEMS 313 Index 389

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Book SynopsisThe current volume continues the tradition of the Organic Syntheses series, providing carefully checked and edited experimental procedures that describe important synthetic methods, transformations, reagents, and synthetic building blocks or intermediates with demonstrated utility in organic synthesis. These significant and interesting procedures should prove worthwhile to many synthetic chemists working in increasingly diverse areas. A trusted guide for professionals in organic and medicinal chemistry in academia, government, and industries, including pharmaceuticals, fine chemicals, agrochemicals, and biotechnological products.Table of ContentsPreparation of Aryl Alkyl Ketenes 1Nicholas D. Staudaher, Joseph Lovelace, Michael P. Johnson, and Janis Louie Preparation of Diisopropylammonium Bis(catecholato)cyclohexylsilicate 16Kingson Lin, Christopher B. Kelly, Matthieu Jouffroy, and Gary A.Molander Continuous Flow Hydration of Pyrazine-2-carbonitrile in a Manganese Dioxide Column Reactor 34Claudio Battilocchio, Shing-Hing Lau, Joel M. Hawkins, and Steven V. Ley Site-Selective C-H Fluorination of Pyridines and Diazines with AgF2 46Patrick S. Fier and John F. Hartwig Site-Selective C-H Fluorination of Pyridines and Diazines with AgF2 46Patrick S. Fier and John F. Hartwig Ugi Multicomponent Reaction 54André Boltjes, Haixia Liu, Haiping Liu, and Alexander Dömling Palladium-catalyzed External-CO-Free Reductive Carbonylation of Bromoarenes 66Hideyuki Konishi, Masataka Fukuda, Tsuyoshi Ueda, and Kei Manabe Practical Syntheses of [2,2′-bipyridine]bis[3,5-difluoro-2- [5-(trifluoromethyl)-2 pyridinyl]phenyl]iridium(III) hexafluorophosphate, [Ir{dF(CF3)ppy}2(bpy)]PF6 and [4,4′-bis (tert-butyl) 2,2′-bipyridine]bis[3,5-difluoro-2-[5-(trifluoromethyl)-2-pyridinyl]phenyl]iridium(III) hexafluorophosphate, [Ir{dF(CF3)ppy}2 (dbbpy)]PF6 77Martins S. Oderinde and Jeffrey W. Johannes (Z)-Enol p-Tosylate Derived from Methyl Acetoacetate: A Useful Cross-coupling Partner for the Synthesis of Methyl (Z)-3-Phenyl (or Aryl)-2-butenoate 93Yuichiro Ashida, Hidefumi Nakatsuji, and Yoo Tanabe Synthesis of Allenyl Mesylate by a Johnson-Claisen Rearrangement. Preparation of 3-(((tert-butyldiphenyl- silyl)oxy)methyl)penta-3,4-dien-1-yl methanesulfonate 109Joseph E. Burchick. Jr., Sarah M. Wells, and Kay M. Brummond Rhodium(I)-catalyzed Allenic Pauson–Khand Reaction 123Joseph E. Burchick. Jr., Sarah M. Wells, and Kay M. Brummond Dirhodium (II) tetrakis[N-4-bromo-1,8-naphthoyl-(S)-tert-leucinate] 136Hélène Lebel, Henri Piras, and Johan Bartholoméüs Buta-2,3-dien-1-ol 153Hongwen Luo, Dengke Ma, and Shengming Ma Fragment Coupling and Formation of Quaternary Carbons by Visible-Light Photoredox Catalyzed Reaction of tert-Alkyl Hemioxalate Salts and Michael Acceptors 167Christopher R. Jamison, Yuriy Slutskyy, and Larry E. Overman N-Methoxy-N-methylcyanoformamide 184Jeremy Nugent and Brett D. Schwartz 4-Cyano-2-methoxybenzenesulfonyl Chloride 198Elliott D. Bayle, Niall Igoe, and Paul V. Fish Preparation of N-Trifluoromethylthiosaccharin: A Shelf-Stable Electrophilic Reagent for Trifluoromethylthiolation 217Jiansheng Zhu, Chunhui Xu, Chunfa Xu, and Qilong Shen Homologation of Boronic Esters with Lithiated Epoxides 234Roly J. Armstrong and Varinder K. Aggarwal Asymmetric Michael Reaction of Aldehydes and Nitroalkenes 252Yujiro Hayashi and Shin Ogasawara Preparation of anti-1,3-Amino Alcohol Derivatives Through an Asymmetric Aldol-Tishchenko Reaction of Sulfinimines 259Pamela Mackey, Rafael Cano, Vera M. Foley, and Gerard P. McGlacken Rhenium-Catalyzed ortho-Alkylation of Phenols 280Yoichiro Kuninobu, Masaki, Yamamoto, Mitsumi Nishi, Tomoyuki Yamamoto, Takashi Matsuki, Masahito Murai, and Kazuhiko Takai Enantioselective Preparation of 5-Oxo-5,6-dihydro-2H-pyran-2-yl phenylacetate via organocatalytic Dynamic Kinetic Asymmetric Transformation (DyKAT) 292Tamas Benkovics, Adrian Ortiz, Gregory L. Beutner, and Chris Sfouggatakis Preparation of Sodium Heptadecyl Sulfate (Tergitol-7i) 303Brent A. Banasik and Mansour Samadpour Catalytic Enantioselective Addition of Diethyl Phosphite to N-Thiophosphinoyl Ketimines: Preparation of (R)-Diethyl (1-Amino-1-phenylethyl)phosphonate 313Shaoquan Lin, Yasunari Otsuka, Liang Yin, Naoya Kumagai, and Masakatsu Shibasaki Water-promoted, Open-flask Synthesis of Amine-boranes: 2-Methylpyridine-borane (2-Picoline-borane) 332Ameya S. Kulkarni and P. Veeraraghavan Ramachandran Preparation of N-Sulfinyl Aldimines using Pyrrolidine as Catalyst via Iminium Ion Activation 346Sara Morales, Alfonso García Rubia, Eduardo Rodrigo, José Luis Aceña, José Luis García Ruano, and M. Belén Cid Synthesis of N-Boc-N-Hydroxymethyl-L-phenylalaninal 358Jae Won Yoo, Youngran Seo, Dongwon Yoo, and Young Gyu Kim Synthesis of Methyl trans-Oxazolidine-5-carboxylate, a Chiral Synthon for threo-β-Amino-α-hydroxy Acid 372Youngran Seo, Jae Won Yoo, Yoonjae Lee, Boram Lee, Bonghyun Kim, and Young Gyu Kim Preparation of Benzyl((R)-2-(4-(benzyloxy)phenyl)-2-((tert- butoxycarbonyl)amino)acetyl)-D-phenylalaninate using Umpolung Amide Synthesis 388Matthew T. Knowe, Sergey V. Tsukanov, and Jeffrey N. Johnston

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Book SynopsisThis book combines emulsion knowledge into a single, comprehensive volume, ideal for professionals and students involved in the areas of pharmaceutical science who are looking to learn about this emergent research concept. Compiles the step-by-step investigations made concerning the potential of nanosized emulsions on both drug delivery and drug targeting areas by different group of scientists in various laboratories across the world Inverts the common nano-emulsions coverage trend of focusing on focused on the particulate system itself, instead exploring the way to turn nanosized emulsions as biomedical tool, as well as, treating the in vitro and in vivo aspects after administration Provides an overview of the current state-of-the art regarding the development of tocol emulsions, emulsion adjuvants in immunization research, oxygen-carrying emulsions (called as fluorocarbon emulsion) and emulsions for delivering drugs to nasal and topical (ocular Table of ContentsList of Contributors ix Foreword xi Preface xiii 1. Introduction: An Overview of Nanosized Emulsions 1 2. Formulation Development of Oil-In-Water Nanosized Emulsions 19 3. Characterization and Safety Assessment F Oil-In-Water Nanosized Emulsions 69 4. Manufacturing and Positioning (Generations) of Oil-In-Water Nanosized Emulsions 169 5. Biofate of Nanosized Emulsions 225 6. Medical or Therapeutical Applications of Oil-In-Water Nanosized Emulsions 259 Part I: Overview of Tocol-Based Emulsions, Oxygen-Carrying Emulsions, Emulsions With Double or Triple Cargos and Emulsion-Like Dispersions 287 7. Overview of Tocol‐Based Emulsions, Oxygen‐Carrying Emulsions, Emulsions With Double or Triple Cargos and Emulsion‐Like Dispersions 289 7.1. Tocol-Based Nanosized Emulsions 291 7.2. Oxygen-Carrying Emulsions 301 7.3. Nanosized Emulsions For Multiple Medicament Loadings, Imaging, and Theranostic Purposes 321 7.4. Emulsion-Like Dispersions 347 Part II: Selected Case Studies 369 8. Selected Case Studies 371 8.1. Case Study 1 - Cationic Nanosized Emulsions: Narration of Commercial Success 373 8.2. Case Study 2 - Fish Oil-Based Nanosized Emulsions 389 Index 423

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Book Synopsis

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Book Synopsis

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Book Synopsis

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Book SynopsisThe first IUPAC Manual of Symbols and Terminology for Physicochemical Quantities and Units was published in 1969 with the objective of 'securing clarity and precision, and wider agreement in the use of symbols, by chemists in different countries, among physicists, chemists and engineers, and by editors of scientific journals'. Subsequent revisions have taken account of many developments in the field and were also substantially expanded and improved in presentation in several new editions of what is now widely known as the ‘Green Book of IUPAC’. This abridged version of the forthcoming 4th edition reflects the experience of the contributors and users of the previous editions. The book has been systematically brought up to date and provides a compilation of generally used terms and symbols with brief, understandable definitions and explanations. Tables of important fundamental constants and conversion factors are included. In this abridged guide, the more specialized and complex material has been omitted, retaining, however, the essence of the Green Book. It is particularly intended to be suitable for students and teachers but it should also be useful for scientists, science publishers and organizations working across a multitude of disciplines requiring internationally approved terminology in the area of Physical Chemistry. It now includes the most up to date definitions and constants in agreement with the ‘new SI’ as established by agreement on the International System of Units in Paris in 2019. It should find the widest possible acceptance and use for best practice in science and technology.Table of ContentsPhysical Quantities and Units;Definitions and Symbols for Units;Conversion of Units;Tables of Physical Quantities;Uncertainty;Greek Alphabet;Index of Symbols;Pressure Conversion Factors;Numerical Energy Conversion Factors;IUPAC Periodic Table of the Elements

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Book SynopsisThe focus of this excellent textbook is the topic of molecular reaction dynamics. The chapters are all written by internationally recognised researchers and, from the outset, the contributors are writing with the young scientist in mind. The easy to use, stand-alone, chapters make it of value to students, teachers, and researchers alike. Subjects covered range from the more traditional topics, such as potential energy surfaces, to more advanced and rapidly developing areas, such as femtochemistry and coherent control. The coverage of reaction dynamics is very broad, so many students studying chemical physics will find elements of this text interesting and useful. Tutorials in Molecular Reaction Dynamics includes extensive references to more advanced texts and research papers, and a series of 'Study Boxes' help readers grapple with the more difficult concepts. Each chapter is thoroughly cross-referenced, helping the reader to link concepts from different branches of the subject. Worked problems are included, and each chapter concludes with a selection of problems designed to test understanding of the subjects covered. Supplementary reading material, and worked solutions to the problems, are contained on a secure website.Table of ContentsIntroduction; Potential energy surfaces: the forces of chemistry; Scattering theory: predicting the outcome of chemical events; Processes involving multiple potential energy surfaces; Inelastic scattering: energy transfer in collisions; Reactive scattering: reactions in three dimensions; Reactive scattering: quantum state-resolved chemistry; Photodissociation dynamics: the fragmentation of molecules by light; Stereodynamics: the role of orientation and alignment in chemistry; Surface scattering: molecular collisions at interfaces; Femtochemistry and the control of chemical reactivity; Cold collisions: chemistry at ultra low temperatures; Study boxes

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Book SynopsisEncompassing an integrated approach to the various aspects of catalysis, covering heterogeneous, homogeneous, organo-, bio-, and computational catalysis, as well as reaction and reactor engineering on an advanced level, this textbook is ideal for graduate students with diverse backgrounds, including catalysis, engineering, and organic synthesis. The basic principles of the various fields of catalysis are introduced in a concise way, preparing the reader for the more advanced chapters. Organometallic chemistry, surface science, biochemistry, nanoscience, transport phenomena and kinetics, reactor and reaction engineering are presented, spanning from the underlying science to industrial applications. Several important case studies on industrial applications are given. It includes catalyst preparation and characterisation and explores recent developments in the understanding of catalytic mechanisms, exploring advanced techniques such as operando spectroscopy.Trade ReviewWithout any doubt, this is a very contemporary textbook about catalysis which will definitely be useful for students and post docs, as well as newcomers. It compromises of not only the history and principles of catalysis but in an acceptable manner, it brings together fundamentals and applications of experimental techniques and reaction kinetics together with the design of reactions etc,. I would recommend it to all lecturers and readers not only for catalytic courses but also for other courses in technical and physical chemistry. -- Jiří Čejka, Charles University PragueTable of ContentsHistory of Catalysis; Feedstocks and Renewable Resources; Current Challenges in Catalysis; Organometallic Chemistry and Elementary Steps; Nanoscience; An Introduction to Biocatalysis; Thermodynamics and Kinetics; Heterogeneous Catalysis; Homogenous Catalysis; Organocatalysis; Biocatalysis; Computational Catalysis; Introduction to Electrocatalysis; Photocatalysis; Solid Materials for Heterogeneous Catalysis; Transition Metal Complexes and Ligand Synthesis; Organocatalysts; Enzymes for Biocatalysis: Key Concepts, Engineering Principles and Case Studies; Advanced Solution Spectroscopic Techniques; X-Ray Photoelectron Spectroscopy; Bulk X-Ray Techniques; Adsorption Methods; Temperature Programmed Techniques; Operando Techniques; Reaction and Reactor Engineering; Catalyst Separation; Process Intensification in Catalysis; Transition Metal Catalysed Methanol Carbonylation; Environmental Analyses and Life Cycle Assessment Studies;

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Book SynopsisGeneral introduction - Definition of nanodispersions (nanosuspensions, nanoemulsions, swollen micelles or microemulsions, liposomes and vesicles) and their size range. General description of their colloid stability. Main advantages of nanodispersions and their industrial applications.Preparation of nanosuspensions by top-up process - Nucleation and growth and control of particle size distribution. Factors determining the formation of narrow particle size distribution. Role of surfactants and polymers. Preparation of nano-polymer colloids (lattices) by emulsion and dispersion polymerization. Factors affects the stability of nanosuspensions.Preparation of nanosuspensions by bottom down process - Dispersion of preformed particles in liquids and the need of a wetting agent. Break-up of aggregates and agglomerates by application of high speed stirrers. Reduction of particle size by application of intense energy (microfluidization or bead milling). Maintenance of the colloid stability of the resulting particles. Reduction of Ostwald ripening.Industrial applications of nanosuspensions - Application in pharmacy to enhance bioavailability, Application in sunscreens for UV protection. Application in paints and coatings.Preparation of nanoemulsions by the use of high pressure homogenisers - Principles of emulsion formation and the role of the emulsifier. Selection of emulsifiers. Methods of emulsification and prevention of coalescence during emulsification. Origin of colloid stability of nanoemulsions. Prevention of Ostwald ripeningLow energy methods for nanoemulsion preparation - The phase inversion composition method and the role of mixing the surfactant with oil and water. The phase inversion temperature method for preparation of nanoemulsions. Preparation of nanoemulsions by dilution of microemulsions.Practical examples of nanoemulsions and their industrial application - Nanoemulsions based on non-ionic surfactants and the role of the hydrophilic-lipophilic balance. Effect of oil solubility on the stabilityof nanoemulsions. Nanoemulsions based on polymeric surfactants. Applications in pharmacy and cosmetics.Swollen micelles or microemulsionsDefinition of microemulsions and their size range. Thermodynamic definition of microemulstions. Theories of microemulsion formation and stability. Characterisation of microemulsions using scattering, conductivity and NMR rechniques.Formulation of microemulsions and their industrial applications - Distinction between microemulsions and macroemulsions. Formulation of oil/water and water/oil microemulsions. Selection of emulsifiers for microemulsions. Application of microemulsions in tertiary oil recovery.Liposomes and vesicles - Formation of multilamellar lipid layers (liposomes) by dispersion of lipids in water. Formation of unilamellar vesicles by sonication of the liposomes. Factors responsible for stabilisation of liposomes and vesicles. Use of block copolymers to enhance the stability of vesicles. Applications of liposomes and vesicles in pharmacy and cosmetics. Table of ContentsChapter 1 General IntroductionDefinition of nanodispersions (nanosuspensions, nanoemulsions, swollen micelles or microemulsions, liposomes and vesicles) and their size range. General description of their colloid stability. Main advantages of nanodispersions and their industrial applications. Outline and scope of the text.Chapter 2 Preparation of nanosuspensions by top-up process Nucleation and growth and control of particle size distribution. Factors determining the formation of narrow particle size distribution. Role of surfactants and polymers. Preparation of nano-polymer colloids (lattices) by emulsion and dispersion polymerization. Factors affects the stability of nanosuspensions.Chapter 3 Preparation of nanosuspensions by bottom down processDispersion of preformed particles in liquids and the need of a wetting agent. Break-up of aggregates and agglomerates by application of high speed stirrers. Reduction of particle size by application of intense energy (microfluidization or bead milling). Maintenance of the colloid stability of the resulting particles. Reduction of Ostwald ripening.Chapter 4 Industrial applications of NanosuspensionsApplication in pharmacy to enhance bioavailability, Application in sunscreens for UV protection. Application in paints and coatings.Chapter 5 Preparation of nanoemulsions by the use of high pressure homogenisersPrinciples of emulsion formation and the role of the emulsifier. Selection of emulsifiers. Methods of emulsification and prevention of coalescence during emulsification. Origin of colloid stability of nanoemulsions. Prevention of Ostwald ripeningChapter 6 Low energy methods for nanoemulsion preparationThe phase inversion composition method and the role of mixing the surfactant with oil and water. The phase inversion temperature method for preparation of nanoemulsions. Preparation of nanoemulsions by dilution of microemulsions.Chapter 7 Practical examples of nanoemulsions and their industrial applicationNanoemulsions based on non-ionic surfactants and the role of the hydrophilic-lipophilic balance. Effect of oil solubility on the stabilityof nanoemulsions. Nanoemulsions based on polymeric surfactants. Applications in pharmacy and cosmetics.Chapter 8 Swollen micelles or microemulsions Definition of microemulsions and their size range. Thermodynamic definition of microemulstions. Theories of microemulsion formation and stability. Characterisation of microemulsions using scattering, conductivity and NMR rechniques.Chapter 9 Formulation of microemulsions and their industrial applicationsDistinction between microemulsions and macroemulsions. Formulation of oil/water and water/oil microemulsions. Selection of emulsifiers for microemulsions. Application of microemulsions in tertiary oil recovery.Chapter 10 Liposomes and VesiclesFormation of multilamellar lipid layers (liposomes) by dispersion of lipids in water. Formation of unilamellar vesicles by sonication of the liposomes. Factors responsible for stabilisation of liposomes and vesicles. Use of block copolymers to enhance the stability of vesicles. Applications of liposomes and vesicles in pharmacy and cosmetics.

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Book SynopsisSurfactants are surface active agents, molecules that have a significant role in emulsions, suspensions, and foams. They find widespread application in personal care, cosmetics, pharmaceuticals, agrochemicals and the food industry. The main objective of this graduate level textbook is to present an overview of the classification, physical properties, phase behavior, their effects and applications of surfactants, e.g. as emulsifiers, foam stabilizer, in nano- and microemulsions and as wetting agents.Table of ContentsFrom the Contents: Introduction Physical Chemistry of Surfactant Solutions Phase Behavior of Surfactant Systems Adsorption of Surfactants at the Air/Liquid and Liquid/Liquid Interfaces Adsorption of Surfactants and Polymeric Surfactants at the Solid/Liquid Interface Application of Surfactants in Emulsion Formation and Stabilization Surfactants as Dispersants Surfactants in Foams Surfactants in Nanoemulsions Surfactants in Microemulsions Role of Surfactants in Wetting, Spreading and Adhesion Surfactants in Personal Care and Cosmetics Surfactants in Pharmaceuticals Surfactants in Agrochemicals Surfactants in Food Products

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Book SynopsisHigh-pressure Molecular Spectroscopy describes examples of the applications of several spectroscopic methods to investigate the behavior of various chemical systems under high pressures, including guest-host interactions, chemical reactions, molecule-based multiferroics, lanthanide ion-doped glasses, and organic, inorganic and organometallic materials. The techniques involved include: Luminescence studies Inelastic neutron scattering Infrared and Raman studies Synchrotron X-ray diffraction

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Book SynopsisHow to get the best out of solar cells, when aiming for efficiency, power, reliability, and cost? After decades of R&D focus on the cell, recently the module has entered the stage and demonstrated huge innovation potential. Photovoltaic Module Technology provides unique insights into state-of-the-art materials, design strategies, manufacturing techniques, and characterization methods of wafer-based photovoltaic modules. Many properties of solar cells are highly relevant for module integration. They set the starting point for understanding the implications of different interconnection and encapsulation technologies. Module design and the choice of materials are described for both state-of-the-art and advanced module technology, with special attention attributed to the key processes of module assembly.

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Book SynopsisAerosol science and engineering is a vibrant field of particle technology and chemical reaction engineering. The book presents a timely account of this interdisciplinary topic and its various application areas. It will be of interest to scientists or engineers active in aerosol physics, aerosol or colloid chemistry, atmospheric processes, and chemical, mechanical, environmental and/or materials engineering.

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Book SynopsisThis introduction to thermodynamics discusses typical phase diagrams features and presents the wide range of techniques such as Differential Scanning Calorimetry, Thermogravimetry and others. In the last part the author brings many examples for typical practical problems often solved by thermal analysis. As an instructive guideline for practitioners the work reveals the connection between experimental data and theoretical model and vice versa.

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Book Synopsis

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Book SynopsisMany brewers and craft beer drinkers have dreams of working at or owning a brewery. Chemists and Biologists are a very natural fit in the brewing industry given their training, background and interests in exploring the world around them. This book supports that natural curiosity through a series of interviews with these individuals who work in the brewing industry at all levels of employment from the lab manager to working as brewery staff to starting a brewery.

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Book Synopsis

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Book SynopsisThis volume documents the proceedings of the International Symposium on Surface Contamination and Cleaning, held in Newark, New Jersey, May 23-25, 2001. Because of the importance of this topic in many technological areas, tremendous efforts have been devoted to devise novel and more efficient ways to monitor, analyse and characterize contamination on surfaces as well as ways to remove such contamination from a wide variety of surfaces. The technological areas where surface contamination has always been a bete noire and thus surface cleaning is of cardinal importance are too many and range from aerospace to microelectronics to biomedical. This volume contains a total of 24 papers, all rigorously peer reviewed and revised before inclusion, which deal with all kinds of contaminations on a host of surfaces. The topics covered include: mapping of surface contaminants; various techniques for cleaning surfaces; various techniques for monitoring level of cleanliness; acceptable cleanliness levels; ionic contamination; pharmaceutical cleaning validations; cleaning of glass surfaces; decontamination of sensitive equipment; no-chemistry process cleaning; waterjet cleaning; cleaning with solid carbon dioxide pellet blasting; cleanroom wipers; dust removal from solar panels and spacecraft on Mars; laser cleaning of silicon surfaces; particle removal; implications of surface contamination and cleaning; and future of industrial cleaning and related public policy-making.Table of ContentsPreface; Mapping of surface contaminants by tunable infrared-laser imaging; Monitoring cleanliness and defining acceptable cleanliness levels; Tracking surface ionic contamination by ion chromatography; A new method using MESERAN technique for measuring surface contamination after solvent extraction; Methods for pharmaceutical cleaning validations; Influence of cleaning on the surface of model glasses and their sensitivity to organic contamination; Decontamination of sensitive equipment; The fundamentals of no-chemistry process cleaning; Development of a technology for generation of ice particles; Cleaning with solid carbon dioxide pellet blasting; Development of a generic procedure for modeling of waterjet Cleaning; Experimental and numerical investigation of waterjet derusting Technology; Practical applications of icejet technology in surface processing; Correlating cleanliness to electrical performance; Qualifying a cleaning system for space flight printed wiring assemblies; Investigation of modified SC-1 solutions for silicon wafer cleaning; Performance qualification of post-CMP cleaning equipment in a semiconductor fabrication environment; Spatial and temporal scales in wet processing of deep submicrometer features ; Microdenier fabrics for cleanroom wipers ; Fine particle detachment studied by reflectometry and atomic force microscopy ; Dust removal from solar panels and spacecraft on Mars; Laser cleaning of silicon wafers: Prospects and problems; The future of industrial cleaning and related public policy-making

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