Mixed-Ligand Complexation of Nickel(II) and Zinc Cations with Histidine, Lysine, and Arginine in Aqueous Solutions

IF 0.8 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2025-08-03 DOI:10.1134/S0036024425701201

Y. E. Karaseva, D. F. Pyreu

引用次数: 0

Abstract

The formation of mixed-ligand complexes of various compositions in M(II) systems is studied by means of pH-metry and spectrophotometry. L-histidine (His)–L (M = Ni, Zn; L = L-lysine (Lys), L-arginine (Arg)) and their constants of formation were calculated at 298.15 K and ionic strength I = 0.5 mol/L (KNO₃). The ligand dentacy is estimated on the basis of a comparative analysis of the constants of proportionation reactions, and the most likely way of coordinating amino acid residues in the composition of mixed complexes is suggested.

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水溶液中镍（II）和锌阳离子与组氨酸、赖氨酸和精氨酸的混合配体络合

用ph法和分光光度法研究了M（II）体系中不同组成的混合配体配合物的形成。计算了L-组氨酸(His) -L （M = Ni, Zn; L = L-赖氨酸（Lys）， L-精氨酸（Arg））在298.15 K和离子强度I = 0.5 mol/L （KNO3）下的形成常数。通过对比例反应常数的比较分析，估计了配体的配牙性，并提出了混合配合物中氨基酸残基最可能的配位方式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.