THERMOCHEMISTRY OF FORMATION OF COPPER(II)-ETHYLENEDIAMINE COMPLEXES AND SOLVATION OF REAGENTS IN AQUEOUS-ORGANIC SOLVENTS

被引：4
作者：
SHARNIN, VA
机构：
[1] State Academy of Chemistry and Technology, Ivanovo
来源：
JOURNAL OF THERMAL ANALYSIS | 1995年 / 45卷 / 04期
关键词：
BINARY SOLVENTS; COPPER(II) COMPLEXES WITH ETHYLENEDIAMINE; REACTION HEAT EFFECTS; THERMOCHEMISTRY; TRANSFER HEAT OF REAGENTS;
D O I：
10.1007/BF02548887
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The heat effects of the reactions of formation of ethylenediamine-copper(II) complexes were determined calorimetrically in mixtures of water with ethanol, acetone and dimethylsulfoxide. The results were interpreted in terms of the enthalpies of transfer (Delta(t)H(0)) of the complex former, the ligand and the complex ion from water to binary solvents. In water - DMSO mixtures, the Delta(t)H(0) values for copper(II) and complex ions were found to change in similar ways, and their contributions to the reaction heat effects compensate each other to a large extent. Thus, the reaction enthalpy change due to solvent composition variation is caused mainly by the changes in ligand solvation enthalpies. In aqueous ethanol and acetone solutions, the changes in Delta(t)H(0) for all reagents influence the heat effect equally.
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页码：721 / 728
页数：8
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