157 ** Aromaticity and the Huckel 4n+2 rule 芳香性和 Huckel4n+2规如 a molecule is aromatic only if it has a planar, monocyclic system of conjugation with a total of 4n+2 I electrons where n is an integer 在一个平面单环热軛体系中,含有4n+2电 子的体系具有与惰性气体相类似的闭壳层结构,从而 显示出芳香性。**Aromaticity and the Huckel 4n+2 rule 芳香性和 Huckel 4n+2规则 p.157 “A molecule is aromatic only if it has a planar, monocyclic system of conjugation with a total of 4n+2 p electrons, where n is an integer. 在一个平面 单环 共軛 体系中, 含有4n+2 p电 子的体系具有与惰性气体相类似的闭壳层结构, 从而 显示出芳香性