The thermochemical characteristics of nicotinamide coordination by iron(III) and ligand protonation in aqueous-ethanolic mixtures

被引：5

作者：

Grazhdan, K. V. ^{[1
]}

Dushina, S. V. ^{[1
]}

Sharnin, V. A. ^{[1
]}

机构：

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

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 83卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

ENTHALPIES;

D O I：

10.1134/S0036024409100197

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：

The heat effects of protonation of nicotinamide and formation of its complex with iron(III) were determined calorimetrically at 25.00 +/- 0.01A degrees C and ionic strength 0.25(NaClO4) in water-ethanol solvent containing 0-0.75 ethanol mol fractions. The experimental and literature data were used to construct the dependences of the enthalpy, entropy, and Gibbs energy of the reaction on the composition of the water-ethanol solvent. The dependence of the enthalpies of both reactions passed an exothermic minimum at 0.1 ethanol mol fractions. The reagent solvation contributions to the thermodynamic characteristics of transfer were analyzed.

引用

页码：1734 / 1736

页数：3

共 9 条

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[2]

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