大学化学 >> 2022, Vol. 37 >> Issue (6): 2108071.doi: 10.3866/PKU.DXHX202108071

知识介绍 上一篇    下一篇

独立存在的π单键

刘丹, 岳立, 张利, 李忠曙()   

  • 收稿日期:2021-08-23 录用日期:2021-09-27 发布日期:2021-10-21
  • 通讯作者: 李忠曙 E-mail:lizhsh6@mail.sysu.edu.cn
  • 作者简介:李忠曙, Email: lizhsh6@mail.sysu.edu.cn
  • 基金资助:
    广东特支计划科技创新青年拔尖人才(2019TQ05C926);广东省自然科学基金(2021A1515012028);广州市科技计划项目(202102080189);中山大学本科教学质量工程项目

Independent π Single Bond

Dan Liu, Li Yue, Li Zhang, Zhongshu Li()   

  • Received:2021-08-23 Accepted:2021-09-27 Published:2021-10-21
  • Contact: Zhongshu Li E-mail:lizhsh6@mail.sysu.edu.cn

摘要:

化学中的共价键分为两类,σ键和π键。σ键可以独立存在,也可以和π键同时存在于多重键中,而对于π键而言,目前教科书中介绍的都是与σ键共存的情况。但是π单键是否可以独立存在呢?虽然可供参考的文献很少,但近期的科研成果表明π单键是可以独立存在的。本文围绕近年来可独立存在π单键的研究进展和特点进行简要综述。

关键词: 共价键, σ键, π键, π单键

Abstract:

In chemistry, covalent bonds are divided into two categories: σ and π bonds. A σ bond can exist independently or concurrently with π bonds, as found in multiple bonds. In contrast, textbooks indicate that all π bonds are accompanied by a σ bond. Is it possible for π single bonds to exist independently? Although there are few references, recent studies have shown that compounds that contain a π single bond do exist. Herein, we review the research progress and characteristics of independent π single bonds.

Key words: Covalent bonds, σ bond, π bond, π single bond