V2EX activated complex

Activated Complex

释义 Definition

(化学)活化络合物 / 活化复合体:化学反应进行到“最高能量点”附近时,反应物正转变为生成物所形成的极不稳定、寿命极短的过渡结构;常与过渡态(transition state)同义或紧密相关(不同教材在术语上略有差异)。

发音 Pronunciation (IPA)

/ktvetd kmpleks/
/ktvetd kmpleks/

例句 Examples

The activated complex exists for only a moment.
活化络合物只在极短的瞬间存在。

According to transition-state theory, the reaction rate depends on the free energy of the activated complex.
根据过渡态理论,反应速率取决于活化络合物的自由能。

词源 Etymology

“Activated”来自 activate(使活化/使启动),表示处于“被激发、能量升高”的状态;“complex”来自拉丁语 complexus(交织在一起的整体)。作为化学动力学术语,“activated complex”在20世纪物理化学与反应速率理论发展中被系统使用,用来描述反应路径上接近能垒顶点的短暂结构(与Eyring等人的过渡态理论相关)。

相关词 Related Words

文学与名著用例 Literary Works

  • Henry Eyring 等:The Theory of Absolute Reaction Rates(讨论活化络合物/过渡态在反应速率中的角色)
  • Keith J. LaidlerChemical Kinetics(化学动力学教材中常用该术语解释速率常数与能垒)
  • Peter Atkins & Julio de PaulaPhysical Chemistry(物理化学教材中在过渡态理论章节出现)
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