溶剂交换和金属离子配体取代反应动力学与溶剂结构性质的关系

H. P. Bennetto, E. Caldin
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引用次数: 41

摘要

讨论了金属离子的溶剂交换和配体取代反应的活化参数与结构性质的关系。溶剂交换被视为配体取代的一种特殊情况。在对配体场稳定性进行校正后,焓和激活熵之间的一般关系表明,在各种溶剂和配体中,两种类型的二价金属离子反应都适用。水在溶剂中处于中间位置。在Frank和Wen的基础上,用溶液中溶剂化离子的结构模型对结果进行了解释。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Kinetics of solvent exchange and ligand substitution reactions of metal ions in relation to structural properties of the solvent
Activation parameters of solvent exchange and ligand substitution reactions of metal ions are discussed in relation to structural properties. Solvent exchange is treated as a particular case of ligand substitution. A general relation between enthalpy and entropy of activation is shown to hold for both types of reaction at divalent metal ions for a wide variety of solvents and ligands, after corrections have been made for ligand-field stabilisation. Water occupies a middle position in the range of solvents. The results are interpreted in terms of a structural model for a solvated ion in solution, based on that of Frank and Wen.
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