V2EX antibonding

Antibonding

释义 Definition

(分子轨道理论中)反键的;指一种分子轨道/相互作用:电子占据后会削弱原子间成键、降低键级,常在两个原子核之间出现节点(node),能量通常高于对应的成键轨道。

发音 Pronunciation (IPA)

/ntibnd/

例句 Examples

The electron is promoted to an antibonding orbital.
电子被激发到一个反键轨道中。

Filling the antibonding π* orbital reduces the bond order and can lengthen the bond, making the molecule less stable.
占据反键的 π* 轨道会降低键级并可能拉长键长,从而使分子更不稳定。

词源 Etymology

由 **anti-**(“反、对抗”)+ bonding(“成键的”)构成。该词在20世纪分子轨道理论发展后广泛使用,用来区分会增强化学键的 bonding orbital(成键轨道) 与会削弱化学键的 antibonding orbital(反键轨道)

相关词 Related Words

文学与著作出现 Literary Works

  • Linus Pauling, The Nature of the Chemical Bond(《化学键的本质》)
  • Peter Atkins & Julio de Paula, Atkins’ Physical Chemistry(《阿特金斯物理化学》)
  • F. Albert Cotton, Chemical Applications of Group Theory(《群论在化学中的应用》)
  • Ira N. Levine, Quantum Chemistry(《量子化学》)
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