高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 568.

• 研究简报 • 上一篇    下一篇

孤对键弱化效应研究

倪申宽1, 封继康2   

  1. 1. 安生师范大学化学系, 芜湖 241000;
    2. 林大学化学系
  • 收稿日期:1992-05-17 修回日期:1992-12-08 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 倪申宽

Studies on the Effect of the Lone Pair Bond Weakening

NI Shen-Kuan1, FENG Ji-Kang2   

  1. 1. Department of Chemistry, Ankui Normal Untyersity, Wuhti, 241000;
    2. Department of Chemistry, Jilin Unwersity, Changehun
  • Received:1992-05-17 Revised:1992-12-08 Online:1993-04-24 Published:1993-04-24

PDF (PC)

被引次数

1

关键词: 孤对电子, 键弱化效应, 屏蔽效应

Abstract: The traditional explanation on the effect of lone pair bond weakening, as the result of inter-electronic repulsions between lone pair electrons on bonding atoms, become void when we compare bond energies of the hydrogen halides, because there are certainly no lone pair electrons on the hydrogen atom to repel the lone pair electrons of the fluorine.In this paper, the reasonable explanation on the effects of lone pair bond weakening by using graphic method of bond parameters is presented.It is considered that the weakening effect is a prime shielding result of lone pair electrons intervening between the bonding electrons and nucleus, rather than the interelectronic repulsions between lone pair electrons on separate atoms.

Key words: Lone pair electrons, Effects of the bond weakening, Shielding effect

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