The Clar covering polynomial of hexagonal systems Ⅱ.An application to resonance energy of condensed aromatic hydrocarbons

The Clar covering polynomial of hexagonal systems is a recently proposed1,2 concept which contains much more topological properties of condensed aromatic hydrocarbons, such as Kekule structure count, Clar number, first Herndon number, etc. It is shown that this polynomial can be used for calculating the resonance energy of condensed aromatic hydrocarbons with better accuracy.

Clar覆盖多项式的直接计算

介绍一种利用计算机直接计算Ｃｌａｒ覆盖多项式的方法．这个方法使用图形界面输入要求解的六角系统，并引进适当的算法，最终直接输出相应的Ｃｌａｒ覆盖多项式。