Bonding and Theory

No theoretical treatment is available for dibismuthines. However, the qualitative features of the band structures of the thermochromic dibismuthines can be anticipated from the Hoffmann model for the corresponding distibines. Thus, the substitution of Bi for Sb is unlikely to affect greatly the ligand v orbitals. But the trg orbital will likely be raised to reflect the weaker metal-metal bond (28). A smaller band gap is predicted, as is observed. 

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Spectroscopy and Photochemistry Quantum Theory and Bonding Symmetry and Group Theory Electrochemistry Experimental Techniques And the Rest... 

J. Barrett (1991) Understanding Inorganic Chemistry The Underlying Physical Principles, Ellis Horwood (Simon Schuster), New York - Chapters 2 and 4 give a readable introduction to group theory and bonding in polyatomic molecules. 

For instructors who feel that it is desirable to introduce orbitals early in the course, prior to chemical reactions, the chapters on atomic theory and bonding (Chapters 11 and 12) can be covered directly after Chapter 4. Chapter 5 deals solely with nomenclature and can be used wherever it is needed in a particular course. 

E. Shustorovich. Chemisorption phenomena analytical modeling based on perturbation theory and bond-order conservation. Surf. Sci. Rep. 6, 1 (1986). 

A later placement provides greater flexibility. An instructor who wants to cover atomic theory and bonding earlier can simply cover Chapters 9 and 10 after Chapter 4. However, if atomic theory and bonding were placed earlier, it would be more difficult for the instructor to skip these chapters and come back to them later. 

Buluggiu, E., Vera, A., Tomlinson, A. A.G. Spin Hamiltonian theory and bonding parameters... 

XIll. Resonance and the Structure op Complex Molecules Spin Theory and Bond Eigenfunctions, 232. Evaluation of the Integrals, 240. The Two-Electron Problem, 244. The Four-Electron Problem, 245. The Concept of Resonance, 248. The Resonance Energy of Benzene, 249. The Resonance Energy of Benzene by the Molecular Orbitals Method, 254. 

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