University Chemistry ›› 2020, Vol. 35 ›› Issue (9): 168-172.doi: 10.3866/PKU.DXHX201910056

• Between Teacher and Student • Previous Articles     Next Articles

A Method for Obtaining the Delocalized π Bonds πnm in a Molecule

Fengling Liu()   

  • Received:2019-10-28 Accepted:2019-12-12 Published:2019-12-20
  • Contact: Fengling Liu


A method for obtaining the delocalized π bonds πnm in a molecule has been discussed in this paper, and the delocalized π bonds πnm in linear, bent, planar trigonal, single cyclic conjugated, and polycyclic conjugated molecules have been studied. The reasons of π34 in NO2 and 2π32 in C3 molecules have been proposed. The delocalized π bonds 2π1818 in cyclo[18] carbon are analyzed.

Key words: Delocalized π bonds πnm, Linear molecule, Bent molecule, Planar trigonal molecule, Cyclic conjugated molecule