A structural rule which is simultaneously applicable to polyhedral hydrocarbons with hydrogen and non-hydrogen atom ligands,BMO = n + l + m,is suggested on the basis of the calculated results by CNDO/2.

• 基于CNDO/2的计算结果,提出了一个可同时适用于H配体与非H配体多面体碳烷的拓扑结构规则:BMO=n+l+m。