Bonding in Electron-Rich Molecules

Qualitative Valence-Bond Approach via Increased-Valence Structures

  • Richard D. Harcourt

Part of the Lecture Notes in Chemistry book series (LNC, volume 90)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Richard D. Harcourt
    Pages 105-119
  3. Richard D. Harcourt
    Pages 121-129
  4. Richard D. Harcourt
    Pages 247-257
  5. Richard D. Harcourt
    Pages 259-267
  6. Richard D. Harcourt
    Pages 283-297
  7. Richard D. Harcourt
    Pages 317-323
  8. Back Matter
    Pages 325-326

About this book


This second edition was updated to include some of the recent developments, such as “increased-valence” structures for 3-electron-3-centre bonding, benzene, electron conduction and reaction mechanisms, spiral chain O4 polymers and recoupled-pair bonding. The author provides qualitative molecular orbital and valence-bond descriptions of the electronic structures for primarily electron-rich molecules, with strong emphasis given to the valence-bond approach that uses “increased-valence” structures. He describes how “long-bond” Lewis structures as well as standard Lewis structures are incorporated into “increased-valence” structures for electron-rich molecules. “Increased-valence” structures involve more electrons in bonding than do their component Lewis structures, and are used to provide interpretations for molecular electronic structure, bond properties and reactivities. Attention is also given to Pauling “3-electron bonds”, which are usually diatomic components of “increased-valence” structures for electron-rich molecules.


3-Electron-3-Centre Bonding 3-electron Bonds Electron-rich Molecules Increased-valence Bonding Increased-valence Structures Molecular Orbital Descriptions Qualitative Valence-bond Descriptions Recoupled-pair Bonding Spiral Chain O4 Polymers

Authors and affiliations

  • Richard D. Harcourt
    • 1
  1. 1.School of ChemistryThe University of MelbourneMelbourneAustralia

Bibliographic information

Industry Sectors
Chemical Manufacturing