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Number of Kekulé structures of hexagon-shaped benzenoids

✍ Scribed by O. Bodroža; I. Gutman; S. J. Cyvin; R. Tošić

Publisher
Springer
Year
1988
Tongue
English
Weight
405 KB
Volume
2
Category
Article
ISSN
0259-9791

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On the number of kekulé structures of un
On the number of kekulé structures of unbranched cata-condensed benzenoid chains
✍ T.P. Živković; N. Trinajstić 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 174 KB

It is known that an alternative algorithm to the Gordon-Davidson algorithm for counting the Kekule valence structures of catacondensed non-branched benzenoid hydrocarbons is a reformulation of the original algorithm. Recently an alternative algorithm [ 1,2] to the Gordon-Davison (GD) algorithm [ 31

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Enumeration of branched catacondensed benzenoid hydrocarbons and their numbers of kekulé structures
✍ A.T. Balaban; J. Brunvoll; B.N. Cyvin; S.J. Cyvin 📂 Article 📅 1988 🏛 Elsevier Science 🌐 French ⚖ 556 KB

The computerized enumerations of unbranched catafusenes (ca condensed benzenoids) are summarized . The systems are classified accord to symmetry . The numbers of helicenic systems are given explicitly . The results of enumerations .for branched catafusenes are also reported, and the systems without