利用简化分子轨道对称性的表示方法——前线轨道奇偶性解释周环反应的立体化学  

A Simple Method of Expressing the Symmetry of Molecular Orbital——the Parity of the Frontier Orbitals to Explain the Stereo Chemistry of Pericyclic Reactions

作　　者：刘美芳 王素青 刘莉 李考学 Liu Meifang;Wang Suqing;Liu Li;Li Kaoxue(Chemistry&Chemical and Environmental Engineering College,Weifang University,Weifang,261061,China)

机构地区：[1]潍坊学院化学化工与环境工程学院,山东潍坊261061

出　　处：《广东化工》2018年第22期120-121,共2页Guangdong Chemical Industry

基　　金：山东省高等学校科技计划项目(J17KA117);山东省本科高校教学改革研究项目C2016M046)

摘　　要：本文提出了新的分子轨道对称性的表示方法——-前线轨道的奇偶性来快速准确的确定周环反应的立体化学,任何开链共轭多烯烃:当分子轨道为奇数(ψ1、ψ3…)时,两端位相相同;当分子轨道为偶数(如ψ2,ψ4…)时,两端位相相反。它可用于解释Woodward一Hoffmann规则和周环反应的机埋,简单易懂,在周环反应的教学中发挥了较好的作用。A simple method of expressing the molecular orbital symmetry--the parity of the frontier orbitals which determined the stereo chemistry of pericyclic reactions accurately.Any conjugated olefins:When the molecular orbital is odd(ψ1,ψ3...),the two ends of the olefin are the same;When the molecular orbital is even(ψ2,ψ4...),the two ends of the olefin are opposite.The representation in terms of molecular orbital symmetry which explained'Woodward-Hoffmann rules and the principle of pericyclic reaction is reviewed.It plays a good role in the teaching ofpericyclic reactions and achieves better results of classroom.

关 键 词：周环反应 轨道对称性 电环化 环加成σ迁移 

分 类 号：TQ[化学工程]