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一谈到芳香性自然会联想到环状共轭体系。诸如苯、轮烯(中性分子或离子)及其同系物。由于它们具有特定的封闭层电子结构,π(p)电子沿环式周边离域而赋予体系一定的稳定化作用,一般说其周边的π(p)电子数符合Huckel(4n+2)规则。此外,分子轨道通过空间相互作用也可以使π(p)电子离域,从而产生一定的稳定化作用。由此又引伸出了同芳香性(homoaromaticity)与双环芳香性(bicycloaromaticity)。前者的π电子数符合Huckel(4n+
When it comes to aromatic nature will naturally think of the ring conjugate system. Such as benzene, alkenes (neutral molecules or ions) and their homologs. Due to their specific closed-loop electronic structure, the π (p) electrons give some stabilization to the system around the perimeter of the ring. Generally speaking, the number of π (p) electrons in the periphery satisfies the Huckel (4n + 2) rule. In addition, molecular orbitals can also delocalize the π (p) electrons through space interactions, resulting in some stabilization. This in turn leads to homoaromaticity and bicycloaromaticity. The former π electron number in line with Huckel (4n +