V2EX ligand field theory

Ligand Field Theory

Definition / 释义

配体场理论:无机化学中用来解释过渡金属配合物电子结构、颜色、磁性与稳定性的理论。它可视为对晶体场理论(Crystal Field Theory)的扩展,强调金属与配体之间不只是静电作用,还包含一定程度的共价相互作用与轨道重叠。(该术语在不同语境下也可能泛指“配位场/配体场”的相关模型。)

Pronunciation / 发音

/lnd fild θri/

Examples / 例句

Ligand field theory helps explain why some metal complexes are colored.
配体场理论有助于解释为什么一些金属配合物呈现颜色。

Using ligand field theory, we can predict the d-orbital splitting in an octahedral complex and relate it to magnetic behavior.
借助配体场理论,我们可以预测八面体配合物中 d 轨道的能级分裂,并将其与磁性行为联系起来。

Etymology / 词源

该短语由三部分构成:ligand(配体)源自拉丁语 ligare(“绑、连接”),指与金属中心结合的离子或分子;field(场)在物理与化学中表示对粒子产生作用的“作用场”;theory(理论)源自希腊语 theōria(“观察、思考”)。合起来即“用来描述配体所造成的作用场及其后果的理论框架”。

Related Words / 相关词

Notable Works / 经典出处

  • Inorganic Chemistry(Miessler, Fischer & Tarr):以配体场理论解释配合物的光谱与磁性等性质。
  • Advanced Inorganic Chemistry(Cotton & Wilkinson;后续版本多作者):系统讨论配位化学与配体场/晶体场相关模型。
  • Ligand Field Theory and Its Applications(B. N. Figgis):专门聚焦配体场理论及其在光谱、磁性等方面的应用。
  • Chemical Applications of Group Theory(F. A. Cotton):常与配体场分析并用,用对称性与群论解释配合物能级与光谱选择定则。
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