Quantum Chemistry
, by Cook, David B.- ISBN: 9781848162655 | 1848162650
- Cover: Hardcover
- Copyright: 9/26/2008
Preface | p. xi |
Acknowledgments | p. xiii |
How Science Deals with Complex Problems | p. 1 |
Introduction: Levels in Science | p. 2 |
What are Molecules Made Of? | p. 4 |
Interactions Between Atoms | p. 6 |
The Simplest examples: H[subscript 2] and LiH | p. 8 |
The Hydrogen Molecule | p. 8 |
The Lithium Hydride Molecule | p. 10 |
What About the Other Li Electrons? | p. 14 |
What About the Nuclear Repulsions? | p. 14 |
Comments on H[subscript 2] and LiH | p. 15 |
How to Proceed? | p. 16 |
How to Interpret 3D Contours | p. 19 |
Thinking in 3D | p. 19 |
The Electron Distribution of the Lithium 2s Electron | p. 22 |
How does this relate to the Text-Book "Orbitals" | p. 25 |
What if the Distribution is not Spherical? | p. 25 |
Must We Use Quantum Theory? | p. 29 |
Connections to Laws of Nature | p. 29 |
Stable Molecules | p. 30 |
The Equipartition of Energy | p. 31 |
Quantum Summary | p. 33 |
What We Know about Atoms and Molecules | p. 35 |
Atomic Electronic Structure | p. 35 |
The Hydrogen Atom | p. 36 |
Many-electron Atoms | p. 38 |
The Pauli Principle | p. 40 |
Statement of the Pauli Principle | p. 40 |
Current Summary for Atoms | p. 41 |
Empirical Chemistry | p. 41 |
The Interpretation of Orbitals | p. 45 |
What is an Orbital? | p. 45 |
Orbitals: Atomic and Molecular | p. 48 |
A Strategy for Electronic Structure | p. 49 |
Review | p. 49 |
Lithium Hydride Again | p. 52 |
Polarisation and Hybrid AOs | p. 53 |
Molecular Orbitals | p. 55 |
Quick Summary | p. 59 |
Is Hybridisation a Real Process? | p. 61 |
The Pauli Principle and Orbitals | p. 63 |
A Difficulty with Helium | p. 64 |
When are Orbitals Mutually Exclusive? | p. 66 |
Does This Work for AOs? | p. 69 |
The Helium Molecule-Again | p. 72 |
The Role of Atomic Orbitals in Valence Theory | p. 75 |
Current Summary for LiH and "He[subscript 2]" | p. 76 |
A Model Polyatomic: Methane | p. 79 |
The Methane Molecule: CH[subscript 4] | p. 79 |
The Electronic Structure of Methane | p. 81 |
The Shape of the Methane Molecule | p. 83 |
What About the Pauli Principle? | p. 84 |
Preliminary Summary for Methane | p. 85 |
The Chemist's Description of Methane | p. 86 |
How to Use these Structures: the Valence Bond Method | p. 88 |
Summary for Methane | p. 91 |
Lone Pairs of Electrons | p. 93 |
Why are Not All Electrons Involved in Bonding? | p. 93 |
What is a Lone Pair? | p. 96 |
The Ammonia Molecule | p. 97 |
The Water Molecule | p. 101 |
The Shapes of Simple Molecules | p. 102 |
The Water Molecule-Again | p. 103 |
"Reactions" of Lone pairs | p. 105 |
A Working Summary | p. 106 |
Organic Molecules with Multiple Bonds | p. 107 |
Double and Triple Bonds | p. 108 |
The Possibilities | p. 110 |
Ethene and Methanal | p. 112 |
The Double Bond in Ethene and Methanal | p. 113 |
Sigma ([sigma]) and Pi ([pi]) Notation in Planar Molecules | p. 115 |
The [sigma] and [pi] Orbitals in C[subscript 2]H[subscript 4] and CH[subscript 2]O | p. 117 |
Ethene Contours | p. 117 |
Methanal Contours | p. 120 |
Relative Energies of the Two Bonds | p. 122 |
Reactivity of a Double Bond | p. 123 |
Multiple Bonds in General | p. 124 |
Molecular Symmetry | p. 125 |
The Question of Symmetry | p. 125 |
Symmetry: Generalisation | p. 128 |
Case Studies: H[subscript 2]O and Benzene | p. 129 |
The H[subscript 2]O Molecule | p. 129 |
The Benzene [sigma] system | p. 132 |
Bond MOs and Symmetry MOs | p. 135 |
A Cautionary Note | p. 136 |
Diatomics with Multiple Bonds | p. 139 |
Motivation | p. 140 |
The Nitrogen Molecule: N[subscript 2] | p. 140 |
Energies of the N[subscript 2] MOs | p. 143 |
Symmetry and the N[subscript 2] Molecule | p. 146 |
The Carbon Monoxide Molecule: CO | p. 148 |
Other Homonuclear Diatomics | p. 150 |
The Oxygen Molecule: O[subscript 2] | p. 151 |
Lessons from Diatomics | p. 153 |
Dative Bonds | p. 155 |
Introduction: Familiar Reactions | p. 155 |
"Solvation" | p. 156 |
A Reactive Lone Pair: the CO Molecule | p. 159 |
CO and Transition-metal Atoms | p. 161 |
The Dative Bond: Summary | p. 161 |
Delocalised Electronic Substructures: Aromaticity | p. 163 |
The Benzene Molecule | p. 163 |
Delocalised Electrons | p. 167 |
Environment-insensitive [pi] Substructures? | p. 172 |
Nomenclature and Summary | p. 175 |
Organic and Inorganic Chemistry | p. 177 |
Commentary on Results | p. 177 |
Nitric Acid and Related Molecules | p. 178 |
The Nitrate Ion NO[subscript 3 superscript -] | p. 183 |
Carbonic acid and Carbonates | p. 185 |
Sulphuric Acid and Sulphates | p. 185 |
Further Down the Periodic Table | p. 187 |
The Effect of Increasing Atomic Number | p. 188 |
The Possible Demise of Lone Pairs | p. 189 |
A Particular Case: Sulphur | p. 190 |
The General Case: "Hypervalence" | p. 192 |
Single or double bonds? | p. 194 |
The Steric Effect | p. 195 |
How to Describe These Bonds? | p. 196 |
A Comparison: 16 valence electrons | p. 198 |
An Updated Summary | p. 203 |
Reconsidering Empirical Rules | p. 205 |
Limitations of the Octet Rule | p. 205 |
The Basis of the Octet Rule | p. 206 |
Population Analysis | p. 209 |
Resonance and Resonance Hybrids | p. 212 |
Oxidation Number | p. 213 |
Summary for Number Rules | p. 215 |
Mavericks and other Lawbreakers | p. 219 |
Exceptions to the Rules | p. 220 |
Boron Hydrides and Bridges | p. 221 |
The Expected Compound: BH[subscript 3] | p. 222 |
The Compounds Which Are Found | p. 223 |
Bridged, Three-Centre, Bonds | p. 223 |
Other Three-Centre Bonds? | p. 226 |
Metals and Crystals | p. 229 |
Metals | p. 230 |
Crystals | p. 231 |
The Hydrogen Bond | p. 233 |
Lawbreakers? | p. 234 |
The Transition Elements | p. 235 |
The Background | p. 236 |
Transition Metals: effects of "d" electrons | p. 237 |
"Screening" in the Electronic Structure of Atoms | p. 238 |
History and Apology | p. 241 |
The "Crystal" Model | p. 241 |
The Molecular Orbital Model | p. 242 |
The "Chemical" Model | p. 245 |
Apology | p. 246 |
Comments | p. 247 |
Omissions and Conclusions | p. 251 |
Omissions | p. 251 |
Intermolecular Forces | p. 252 |
Chemical Reactions | p. 252 |
Conclusions | p. 255 |
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