一类苯系统的克拉公式

THE CLAR FORMULA OF A TYPE OF BENZENOID SYSTEMS

按克拉的芳香六隅体理论,苯系统的一个克拉公式是它的一个两两不交的共振六隅体的集合,且其基数最大,构造苯系统的克拉公式及计算其大小是一个未解决而困难的问题,本文基于苯系统的三元不变量(x,y,z)构造出了一类称为二面体型六边形苯系统(ihedral hexagon)的克拉公式,该方法还可用于构造其它几类苯系统的克拉公式。

According to the theory of Clar aromatic sextet, a Clar formula of a benzenoid system is a set of mutually disjoint resonance sextets with maximum cardinality. To construct the Clar formula of benzenoid systems and calculate its size is still an open problem. This paper constrocts Clar formula of a type of benzenoid systems called dihedral hexagon in terms of invariant triple (x, y, z) of benzenoid systems. Such a method can be used to other cases.