独立存在的π单键  

Independent π Single Bond

作　　者：刘丹 岳立 张利 李忠曙 Dan Liu;Li Yue;Li Zhang;Zhongshu Li(School of Chemistry,Sun Yat-Sen University,Guangzhou 510006,China.)

机构地区：[1]中山大学化学学院,广州510006

出　　处：《大学化学》2022年第6期39-43,共5页University Chemistry

基　　金：“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。

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。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.

关 键 词：共价键 Σ键 Π键 π单键 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]