Partitioning of 𝜋–electrons in the rings of benzenoid hydrocarbons using Fries structural formulas

Abstract

The recently introduced concept of electron contents (EC) of the rings in benzenoid hydrocarbons initiated detailed investigations in that area. There are numerous papers considering this particular topic [1-19]. Calculation of electron contents of the rings is based on Kekulé structures. In this paper, we propose a new way for distributing π-electrons into the hexagons of benzenoid molecules using Fries structures. In addition, we compared our results with those obtained by original the Randić-Balaban model.