Wiener numbers of random benzenoid chains
✍ Scribed by Ivan Gutman; John W. Kennedy; Louis V. Quintas
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 334 KB
- Volume
- 173
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
An explicit analytical expression for E( W(n) ), the expected value of the Wiener number of a random benzenoid chain with n hexagons is obtained. In the general case, E( W(n) ) is not a polynomial in the variable n.
📜 SIMILAR VOLUMES
Explicit formulas are given for the number of Kekul6 structures of some classes of corona-condensed benzenoids. A general algorithm for cycloarenes is reported.
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
A method for the estimation of E,,, the number of benzenoid systems with h hexagons, is presented. B,, is predicted to lie between 3.200x lo6 and 3.202x 106. This is a significant improvement on the earlier result which located BI1 between 3.080~ lo6 and 3.300x 106.