The significance of Kekulé structures for the stability of aromatic systems
✍ Scribed by E. Clar; W. Kemp; D.G. Stewart
- Publisher
- Elsevier Science
- Year
- 1958
- Tongue
- French
- Weight
- 554 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0040-4020
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📜 SIMILAR VOLUMES
An economical two-vertex elimination method for deciding whether or not a given polyeyclic aromatic hydrocarbon has Kekult structures is suggested. New concepts of convex (concave) vertices, rectangular sets, convex rectangular sets and convex pairs are introduced.
A novel method for the calculation of the number Kof Kekult structures of benzenoid hydrocarbons is presented. K= ) det WI, where W is a matrix whose entries are the K values of certain fragments of the benzenoid system considered.
The number of Kekult structures for primitive coronoids is studied. The systems have obvious counterparts within a class of hydrocarbons known as cycloarenes. Complete solutions are given for centrosymmetrical primitive coronoids and those with trigonal or hexagonal symmetries. The technique is base