Upper bounds for the Clar number of a benzenoid hydrocarbon

Upper bounds for the Clar number of a benzenoid hydrocarbon
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DOI:
10.1039/ft9928801621
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发表时间:
1992-03
期刊:
Journal of the Chemical Society, Faraday Transactions
影响因子:
--
通讯作者:
P. Hansen;M. Zheng
P. Hansen;M. Zheng
中科院分区:
其他
文献类型:
--
作者:
P. Hansen;M. Zheng

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本文给出了一种计算苯型烃的克拉数(定义为克拉公式中的圈数)的各种上界的方法。在此基础上,给出了两个特殊的上界。对于各种示例,这些边界之一是尖锐的。启发式使用的方法来找到一个给定的苯型烃的克拉数也说明了。
A method for computing various upper bounds for the Clar number (defined as the number of circles in a Clar formula) of a benzenoid hydrocarbon is given. Based on this method two particular upper bounds are presented. For various examples, one of these bounds is sharp. Heuristic use of the method to find the Clar number of a given benzenoid hydrocarbon is also illustrated.