V2EX triple bond

Triple Bond

释义 Definition

三键:化学中指两个原子之间由三对共享电子形成的共价键,通常记作 。三键一般比单键、双键更短、更强,常见于炔烃(如乙炔)以及氮气 N等分子中。(在有机化学里最常见的是 C≡CC≡N。)

发音 Pronunciation (IPA)

/trpl bnd/ (BrE), /trpl bnd/ (AmE)

例句 Examples

A triple bond is shown with three lines.
三键通常用三条线来表示。

In acetylene, the carbon atoms are connected by a triple bond, which makes the molecule relatively linear and reactive.
在乙炔中,两个碳原子由一个三键相连,这使分子结构较为线性且具有一定反应性。

词源 Etymology

triple 来自拉丁语 triplex(三重的、三倍的),表示“三”;bond 在化学语境中指“键/结合”。合起来 triple bond 就是“由三份共享电子对构成的化学键”。

相关词 Related Words

文学与名著用例 Literary Works

  • Linus Pauling, The Nature of the Chemical Bond(《化学键的本质》):讨论多重键(含三键)的键级、键长与键能概念。
  • Jonathan Clayden, Nick Greeves & Stuart Warren, Organic Chemistry(《有机化学》):在炔烃与亲核/亲电加成反应章节中频繁出现 triple bond
  • IUPAC, *Compendium of Chemical Terminology (Gold Book)*(《化学术语汇编金皮书》):对化学键与多重键相关术语进行规范化说明。
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