大学化学 >> 2016, Vol. 31 >> Issue (12): 69-72.doi: 10.3866/PKU.DXHX201606027

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ABn型分子或离子中离域π键的讨论

蔡苹*(),胡锴,程功臻   

  • 发布日期:2016-12-20
  • 通讯作者: 蔡苹 E-mail:caiping@whu.edu.cn

Discussion of the Delocalized π-Bond in ABn Molecules

Ping CAI*(),Kai HU,Gong-Zhen CHENG   

  • Published:2016-12-20
  • Contact: Ping CAI E-mail:caiping@whu.edu.cn

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摘要：

详细讨论了分子中存在离域π键的3个条件和推断分子中离域π键存在形式的3个步骤，同时介绍了原子不共平面时，“离域π键”存在的可能性。文中大量的实例和讨论，有助于读者全面掌握“离域π键”这一知识点。

关键词: 离域π键, 价层电子对互斥, 杂化轨道

Abstract:

Conditions for formation of the delocalized π-bond in ABn molecules were discussed in detail. Three steps were introduced to help judging the formation of delocalized π-bond in ABn molecules. The delocalized π-bond in some non-planar molecules was also discussed.

Key words: Delocalized π-bond, Valence shell electron pair repulsion, Hybridized orbital