高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (12): 2012.

• 论文 • 上一篇    下一篇

二十面体碳硼烷的亲电取代定位效应理论研究

邹建卫, 张明瑜, 于微舟, 孙家锺   

  1. 吉林大学理论化学研究所, 长春 130023
  • 收稿日期:1996-09-26 出版日期:1997-12-24 发布日期:1997-12-24
  • 通讯作者: 张明瑜.
  • 作者简介:邹建卫, 男, 26岁, 博士研究生.
  • 基金资助:

    国家教育委员会博士学科点基金

Ab Initio Studies on Directing Effects of Electrophilic Substitution for Closo Icosahedral Carboranes

ZOU Jian-Wei, ZHANG Ming-Yu, YU Wei-Zhou, SUN Chia-Chung   

  1. Institute of Theoretical Chemistry, State Key Laboratory of Theoreticaland Computational Chemistry, Jilin University, Changchun 130023
  • Received:1996-09-26 Online:1997-12-24 Published:1997-12-24

摘要: 利用Gaussian94从头计算程序在6-31G基组下对二十面体碳硼烷C2B10H12、CB11H12-及其衍生物CB11H11Br-进行了从头计算.结果表明,在亲电取代反应中,杂原子C具有对、间位定位效应,取代基-Br为邻、对位定位基团,与实验事实相符.

关键词: 碳硼烷, 定位效应, 电荷布居

Abstract: Icosahedral carboranes C2B10H12, CB11H12- and the derivatives CB11H11Br-were in-vestigated by using ab initio calculations at 6-31G basis set.The analysis of populationdemonstrated that heteroatom Chas meta, para-directing effects and substituent Br is ortho, para-directing in the course of e1ectrophilic substitution of 12-vertex carboranes.Theresults are in good agreement with experimental facts.

Key words: Carborane, Directing effect, Charge population

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