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Identification of the Kekulé, structures of a hexagonal system

✍ Scribed by Rong-qin Sheng

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
291 KB
Volume
142
Category
Article
ISSN
0009-2614

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✦ Synopsis

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.

📜 SIMILAR VOLUMES

A new method for the enumeration of keku
A new method for the enumeration of kekulé structures
✍ Ivan Gutman; Sven J. Cyvin 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 300 KB

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.

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Enumeration of kekulé structures in polymers
✍ A. Graovc; D. Babić; M. Strunje 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 310 KB

A procedure 1s described which allows the evaluation of the number of Kekule structures, K, for any polymer. In the case of regular polymers explicit recurrence relations for K are derived where the order of the recurrence depends on the number of edges linking two consecutive monomers.

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✍ S.J. Cyvin 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 374 KB

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