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[资源] Computational Chemistry Using An PC

Computational Chemistry Using the PC
Third Edition
Donald W. Rogers

http://u.115.com/file/f2bb767b8f#Download
Computational_Chemistry_Using_An_PC.pdf

Published by John Wiley & Sons, Inc., Hoboken, New Jersey.
Published simultaneously in Canada.

Preface to the Third Edition xv
Preface to the Second Edition xvii
Preface to the First Edition xix
Chapter 1. Iterative Methods 1
Iterative Methods 1
An Iterative Algorithm 2
Blackbody Radiation 2
Radiation Density 3
Wien’s Law 4
The Planck Radiation Law 4
COMPUTER PROJECT 1-1 j Wien’s Law 5
COMPUTER PROJECT 1-2 j Roots of the Secular Determinant 6
The Newton–Raphson Method 7
Problems 9
Numerical Integration 9
Simpson’s Rule 10
vii
Efficiency and Machine Considerations 13
Elements of Single-Variable Statistics 14
The Gaussian Distribution 15
COMPUTER PROJECT 1-3 j Medical Statistics 17
Molecular Speeds 19
COMPUTER PROJECT 1-4 j Maxwell–Boltzmann
Distribution Laws 20
COMPUTER PROJECT 1-5 j Elementary Quantum Mechanics 23
COMPUTER PROJECT 1-6 j Numerical Integration of Experimental
Data Sets 24
Problems 29
Chapter 2. Applications of Matrix Algebra 31
Matrix Addition 31
Matrix Multiplication 33
Division of Matrices 34
Powers and Roots of Matrices 35
Matrix Polynomials 36
The Least Equation 37
Importance of Rank 38
Importance of the Least Equation 38
Special Matrices 39
The Transformation Matrix 41
Complex Matrices 42
What’s Going On Here? 42
Problems 44
Linear Nonhomogeneous Simultaneous Equations 45
Algorithms 47
Matrix Inversion and Diagonalization 51
COMPUTER PROJECT 2-1 j Simultaneous Spectrophotometric
Analysis 52
COMPUTER PROJECT 2-2 j Gauss–Seidel Iteration: Mass
Spectroscopy 54
COMPUTER PROJECT 2-3 j Bond Enthalpies of Hydrocarbons 56
Problems 57
Chapter 3. Curve Fitting 59
Information Loss 60
The Method of Least Squares 60
viii CONTENTS
Least Squares Minimization 61
Linear Functions Passing Through the Origin 62
Linear Functions Not Passing Through the Origin 63
Quadratic Functions 65
Polynomials of Higher Degree 68
Statistical Criteria for Curve Fitting 69
Reliability of Fitted Parameters 70
COMPUTER PROJECT 3-1 j Linear Curve Fitting: KF Solvation 73
COMPUTER PROJECT 3-2 j The Boltzmann Constant 74
COMPUTER PROJECT 3-3 j The Ionization Energy of Hydrogen 76
Reliability of Fitted Polynomial Parameters 76
COMPUTER PROJECT 3-4 j The Partial Molal Volume of ZnCl2 77
Problems 79
Multivariate Least Squares Analysis 80
Error Analysis 86
COMPUTER PROJECT 3-5 j Calibration Surfaces Not Passing
Through the Origin 88
COMPUTER PROJECT 3-6 j Bond Energies of Hydrocarbons 89
COMPUTER PROJECT 3-7 j Expanding the Basis Set 90
Problems 90
Chapter 4. Molecular Mechanics: Basic Theory 93
The Harmonic Oscillator 93
The Two-Mass Problem 95
Polyatomic Molecules 97
Molecular Mechanics 98
Ethylene: A Trial Run 100
The Geo File 102
The Output File 103
TINKER 108
COMPUTER PROJECT 4-1 j The Geometry of Small Molecules 110
The GUI Interface 112
Parameterization 113
The Energy Equation 114
Sums in the Energy Equation: Modes of Motion 115
COMPUTER PROJECT 4-2 j The MM3 Parameter Set 117
CONTENTS ix
COMPUTER PROJECT 4-3 j The Butane Conformational Mix 125
Cross Terms 128
Problems 129
Chapter 5. Molecular Mechanics II: Applications 131
Coupling 131
Normal Coordinates 136
Normal Modes of Motion 136
An Introduction to Matrix Formalism for Two Masses 138
The Hessian Matrix 140
Why So Much Fuss About Coupling? 143
The Enthalpy of Formation 144
Enthalpy of Reaction 147
COMPUTER PROJECT 5-1 j The Enthalpy of Isomerization of
cis- and trans-2-Butene 148
Enthalpy of Reaction at Temperatures 6¼ 298 K 150
Population Energy Increments 151
Torsional Modes of Motion 153
COMPUTER PROJECT 5-2 j The Heat of Hydrogenation
of Ethylene 154
Pi Electron Calculations 155
COMPUTER PROJECT 5-3 j The Resonance Energy of Benzene 157
Strain Energy 158
False Minima 158
Dihedral Driver 160
Full Statistical Method 161
Entropy and Heat Capacity 162
Free Energy and Equilibrium 163
COMPUTER PROJECT 5-4 j More Complicated Systems 164
Problems 166
Chapter 6. Huckel Molecular Orbital Theory I: Eigenvalues 169
Exact Solutions of the Schroedinger Equation 170
Approximate Solutions 172
The Huckel Method 176
The Expectation Value of the Energy: The Variational Method 178
COMPUTER PROJECT 6-1 j Another Variational Treatment of the
Hydrogen Atom 181
x CONTENTS
Huckel Theory and the LCAO Approximation 183
Homogeneous Simultaneous Equations 185
The Secular Matrix 186
Finding Eigenvalues by Diagonalization 187
Rotation Matrices 188
Generalization 189
The Jacobi Method 191
Programs QMOBAS and TMOBAS 194
COMPUTER PROJECT 6-2 j Energy Levels (Eigenvalues) 195
COMPUTER PROJECT 6-3 j Huckel MO Calculations of
Spectroscopic Transitions 197
Problems 198
Chapter 7. Huckel Molecular Orbital Theory II: Eigenvectors 201
Recapitulation and Generalization 201
The Matrix as Operator 207
The Huckel Coefficient Matrix 207
Chemical Application: Charge Density 211
Chemical Application: Dipole Moments 213
Chemical Application: Bond Orders 214
Chemical Application: Delocalization Energy 215
Chemical Application: The Free Valency Index 217
Chemical Application: Resonance (Stabilization) Energies 217
LIBRARY PROJECT 7-1 j The History of Resonance and
Aromaticity 219
Extended Huckel Theory—Wheland’s Method 219
Extended Huckel Theory—Hoffman’s EHT Method 221
The Programs 223
COMPUTER PROJECT 7-1 j Larger Molecules: Calculations
using SHMO 225
COMPUTER PROJECT 7-2 j Dipole Moments 226
COMPUTER PROJECT 7-3 j Conservation of Orbital Symmetry 227
COMPUTER PROJECT 7-4 j Pyridine 228
Problems 229
Chapter 8. Self-Consistent Fields 231
Beyond Huckel Theory 231
Elements of the Secular Matrix 232
CONTENTS xi
The Helium Atom 235
A Self-Consistent Field Variational Calculation of
IP for the Helium Atom 236
COMPUTER PROJECT 8-1 j The SCF Energies of First Row
Atoms and Ions 240
COMPUTER PROJECT 8-2 j A High-Level ab initio Calculation of SCF
First IPs of the First Row Atoms 241
The STO-xG Basis Set 242
The Hydrogen Atom: An STO-1G ‘‘Basis Set’’ 243
Semiempirical Methods 248
PPP Self-Consistent Field Calculations 248
The PPP-SCF Method 249
Ethylene 252
Spinorbitals, Slater Determinants, and Configuration Interaction 255
The Programs 256
COMPUTER PROJECT 8-3 j SCF Calculations of Ultraviolet
Spectral Peaks 256
COMPUTER PROJECT 8-4 j SCF Dipole Moments 258
Problems 259
Chapter 9. Semiempirical Calculations on Larger Molecules 263
The Hartree Equation 263
Exchange Symmetry 266
Electron Spin 267
Slater Determinants 269
The Hartree–Fock Equation 273
The Fock Equation 276
The Roothaan–Hall Equations 278
The Semiempirical Model and Its Approximations:
MNDO, AM1, and PM3 279
The Programs 283
COMPUTER PROJECT 9-1 j Semiempirical Calculations on Small
Molecules: HF to HI 284
COMPUTER PROJECT 9-2 j Vibration of the Nitrogen Molecule 284
Normal Coordinates 285
Dipole Moments 289
COMPUTER PROJECT 9-3 j Dipole Moments (Again) 289
Energies of Larger Molecules 289
xii CONTENTS
COMPUTER PROJECT 9-4 j Large Molecules: Carcinogenesis 291
Problems 293
Chapter 10. Ab Initio Molecular Orbital Calculations 299
The GAUSSIAN Implementation 299
How Do We Determine Molecular Energies? 301
Why Is the Calculated Energy Wrong? 306
Can the Basis Set Be Further Improved? 306
Hydrogen 308
Gaussian Basis Sets 309
COMPUTER PROJECT 10-1 j Gaussian Basis Sets: The HF Limit 311
Electron Correlation 312
G2 and G3 313
Energies of Atomization and Ionization 315
COMPUTER PROJECT 10-2 j Larger Molecules: G2, G2(MP2), G3,
and G3(MP2) 316
The GAMESS Implementation 317
COMPUTER PROJECT 10-3 j The Bonding Energy Curve of H2:
GAMESS 318
The Thermodynamic Functions 319
Koopmans’s Theorem and Photoelectron Spectra 323
Larger Molecules I: Isodesmic Reactions 324
COMPUTER PROJECT 10-4 j Dewar Benzene 326
Larger Molecules II: Density Functional Theory 327
COMPUTER PROJECT 10-5 j Cubane 330
Problems 330
Bibliography 333
Appendix A. Software Sources 339
Index 343

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