Ebook: Advances in the Theory of Benzenoid Hydrocarbons

Contents: L.J. Allamandola, Moffett Field, CA, USA: Benzenoid Hydrocarbons in Space: The Evidence and Implications

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Contents: L.J. Allamandola, Moffett Field, CA, USA: Benzenoid Hydrocarbons in Space: The Evidence and Implications
Content:
Front Matter....Pages -
Benzenoid hydrocarbons in space: The evidence and implications....Pages 1-25
The distortive tendencies of delocalized ? electronic systems. Benzene, cyclobutadiene and related heteroannulenes....Pages 27-39
The spin-coupled valence bond description of benzenoid aromatic molecules....Pages 41-55
Semiempirical valence bond views for benzenoid hydrocarbons....Pages 57-83
Scaling properties of topological invariants....Pages 85-99
Molecular topology and chemical reactivity of polynuclear benzenoid hydrocarbons....Pages 101-122
A periodic table for benzenoid hydrocarbons....Pages 123-143
Calculating the numbers of perfect matchings and of spanning trees, Pauling's orders, the characteristic polynomial, and the eigenvectors of a benzenoid system....Pages 145-179
The existence of Kekul? structures in a benzenoid system....Pages 181-193
Peak-valley path method on benzenoid and coronoid systems....Pages 195-209
Rapid ways to recognize Kekul?an benzenoid systems....Pages 211-226
Methods of enumerating Kekul? structures, exemplified by applications to rectangle-shaped benzenoids....Pages 227-253
Clar's aromatic sextet and sextet polynomial....Pages 255-272
Caterpillar (Gutman) trees in chemical graph theory....Pages 273-289
Back Matter....Pages -

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Contents: L.J. Allamandola, Moffett Field, CA, USA: Benzenoid Hydrocarbons in Space: The Evidence and Implications
Content:
Front Matter....Pages -
Benzenoid hydrocarbons in space: The evidence and implications....Pages 1-25
The distortive tendencies of delocalized ? electronic systems. Benzene, cyclobutadiene and related heteroannulenes....Pages 27-39
The spin-coupled valence bond description of benzenoid aromatic molecules....Pages 41-55
Semiempirical valence bond views for benzenoid hydrocarbons....Pages 57-83
Scaling properties of topological invariants....Pages 85-99
Molecular topology and chemical reactivity of polynuclear benzenoid hydrocarbons....Pages 101-122
A periodic table for benzenoid hydrocarbons....Pages 123-143
Calculating the numbers of perfect matchings and of spanning trees, Pauling's orders, the characteristic polynomial, and the eigenvectors of a benzenoid system....Pages 145-179
The existence of Kekul? structures in a benzenoid system....Pages 181-193
Peak-valley path method on benzenoid and coronoid systems....Pages 195-209
Rapid ways to recognize Kekul?an benzenoid systems....Pages 211-226
Methods of enumerating Kekul? structures, exemplified by applications to rectangle-shaped benzenoids....Pages 227-253
Clar's aromatic sextet and sextet polynomial....Pages 255-272
Caterpillar (Gutman) trees in chemical graph theory....Pages 273-289
Back Matter....Pages -
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