高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (2): 263.

• 研究简报 • 上一篇    下一篇

产生两套π键能数据的原因

罗渝然   

  1. 中国科学技术大学近代化学系
  • 收稿日期:1981-10-26 出版日期:1983-04-24 发布日期:1983-04-24

THE REASON FOR BRINGING ON TWO SETS OF PI-BOND ENERGY DATA

Luo Yuran   

  1. Department of Modern Chemistry, China University of Science and Technology, Hefei
  • Received:1981-10-26 Online:1983-04-24 Published:1983-04-24

摘要: π键能与σ键能不同,迄今无测量方法。从不同角度出发,有两套不同的π键能数据。

Abstract: The assumption that the bond energies in the free radicals are equal to ones in the parent molecules is the reason for bringing on two sets of pi-bond energy data. If the assumption is not accepted, the same values of pi-bond energies can be estimated from thermochemical and kinetic data. The theoretical base and the error range for Benson-O'Neal empirical rule for estimating activation energies of thermal cis-trans isomerization have been discussed.

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