Thermodynamics of the formation of complexes of copper(II) ions and glycylglycine in aqueous solutions at 298 K according to calorimetry data

被引：8

作者：

Kochergina, L. A. ^{[1
]}

Emel'yanov, A. V. ^{[1
]}

机构：

[1] Ivanovo State Univ Chem & Technol, Ivanovo 153460, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2015年 / 89卷 / 04期

关键词：

thermodynamics; peptide; solutions; glycylglycine; complex compounds; calorimeter; MIXED-LIGAND COMPLEXES; TERNARY COMPLEXES; METAL-COMPLEXES; GLYCINE PEPTIDES; COORDINATION COMPLEXES; CU(II) COMPLEXES; BETA-ALANINE; AMINO-ACIDS; CUPRIC IONS; DIPEPTIDES;

D O I：

10.1134/S0036024415040135

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heat effects of the interaction between glycylglycine and copper(II) nitrate solutions are measured by direct calorimetry at a [metal] : [ligand] ratio of 1 : 5 and at different pH values of the solution. The measurements are made at a temperature of 298.15 K and ionic strengths of 0.25, 0.50, and 0.75. KNO3 is used as a background electrolyte. The thermodynamic characteristics of complex formation by the peptide and copper(II) ions in aqueous solutions are determined. Standard enthalpies of the formation of complex particles in aqueous solutions are calculated.

引用

页码：580 / 585

页数：6

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