SIOC English
化学学报
高级检索

化学学报 ›› 1980, Vol. 38 ›› Issue (1): 41-49. 上一篇    下一篇

论文

超加折射度与结构活性的定量关系Ⅰ.共轭效应参数σE

李森   

  1. 中国科学院上海有机化学研究所
  • 投稿日期:1977-11-01 发布日期:2013-06-03

QUANTITATIVE RELATIONSHIP BETWEEN EXALTATION OF MOLECULAR REFRACTION AND CHEMICAL REACTIVITY Ⅰ. A CONJUGATIVE INDEX σE

Li SEN   

  1. Shanghai Institute of Organic Chemistry, Academia Sinica
  • Received:1977-11-01 Published:2013-06-03

PDF

553

本文从对共轭体系分子的超加折射度的自由电子模型处理,得到一个经验参数σE,与Hückel的⊿m值及Hammett的σ值均为线性关系。

Since molecular refraction is the result of displacement of eleotron cloud of bonds in a molecule from their equilibrium position relative to the molecular skeleton under excitation of photon,it is reasonable to deduce that for a conjugated molecule,the exaltation of molecular refraction,⊿RE should be proportional to the free transition volume of the π-electrons.