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Table of Contents
Addendum Chapter 2 ........................................................................................ 34
Chapter 3 Wave-Functions and Valence-Bond Structures for
1-Electron Bonds, Electron-Pair Bonds, Pauling
“3-Electron Bonds” and “no Bonds” ............................... 35
3-1 Diatomic Bonding and Antibonding Molecular Orbitals .......................... 35
3-2 One-Electron Bonds ............................................................................... 36
3-3 Electron-Pair Bonds ............................................................................... 37
3-4 Electron Spin Wave-Functions for One-Electron and Two-Electron
Systems ................................................................................................. 40
3-5 An Important Identity: 1 bonding electron + 1 antibonding electron =
2 “non-bonding” electrons for parallel-spin electrons .............................. 41
3-6 The Pauling “3-Electron Bond” .............................................................. 42
3-7 Slater Determinants and the Pauling “3-Electron Bond” .......................... 44
3-8 “No Bonds” ........................................................................................... 48
3-9 Valence-Bond Structures and Bond Properties for H 2
+
, H 2 , He 2
+ and
He 2 ........................................................................................................ 49
3-10 Inclusion of Overlap Integrals in Normalization Constants
for Molecular Orbitals; Non-Bonded Repulsions ..................................... 49
3-11 Bond-Orders .......................................................................................... 51
References ........................................................................................................ 52
Addendum Chapter 3 ........................................................................................ 53
Chapter 4 Valence-Bond Structures for some Diatomic and
related Molecules .............................................................. 55
4-1 Molecular Orbital Configurations for Homonuclear Diatomic
Molecules .............................................................................................. 55
4-2 Li 2 , Be 2 , N 2 , F 2 and
22
O ......................................................................... 57
4-3 O 2 , O 2
+
, O 2
– and
22
O .............................................................................. 57
4-4 CN
– , CO and NO
+ .................................................................................. 58
4-5 NO and SN ............................................................................................ 59
4-6 S 2 , SO and NO
– ...................................................................................... 59
4-7 ClO and FO ............................................................................................ 60
4-8 ClF 2 and SF 3 .......................................................................................... 60
4-9 N-H Bond-Strengths of NH 3 , N 2 H 4 , N 2 H 2 , and HN 2  H + N 2 ................ 61
References ........................................................................................................ 62
Addendum Chapter 4 ........................................................................................ 63
Chapter 5 Pauling “3-Electron Bonds” and Hypoligated
Transition Metal Complexes ............................................ 67
5-1 Hypoligated and Hyperligated Transition Metal Complexes .................... 67
5-2 Pauling “3-Electron Bonds” and the Electronic Structure of
[Fe(H 2 O) 6 ]
2+ ........................................................................................... 70