Abstract

Using the methods of pH-metry and mathematical simulation, we studied the complex formation in the copper(II)–malonic (L)/adipic acid (L')–L-histidine (HisH) ternary systems in aqueous medium against 1.0 M KNO₃ solution at 25.0°C. The stability constants of (1 : 1 : 1) heteroligand complexes were determined. Quantum chemical calculations of the structures of heteroligand complexes were performed. It was revealed that the Cu(His)(L)⁺ and Cu(His)(L')⁺ complexes exist predominantly in the cis-form.

中文翻译：

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铜与丙二酸和己二酸二酰肼和L-组氨酸的杂配体配合物

摘要

使用pH测量和数学模拟的方法，我们研究了在水性介质中针对1.0 M KNO的铜（II）-丙二酸（L）/己二酸（L'）-L-组氨酸（HisH）三元体系中的络合物形成₃在25.0°C下溶液。确定了（1∶1∶1）杂配体配合物的稳定性常数。进行了杂配体配合物结构的量子化学计算。揭示了Cu（His）（L）⁺和Cu（His）（L'）⁺络合物主要以顺式存在。