Thermochemistry of solvation of 18-crown-6 ether in binary methanol-acetonitrile solvents

被引：7
|
作者：
Kuz'mina, I. A. [1 ]
Usacheva, T. R. [1 ]
Sharnin, V. A. [1 ]
Volkova, M. A. [1 ]
机构：
[1] Ivanovo State Univ Chem & Technol, Ivanovo 153460, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2013年 / 87卷 / 07期
关键词：
methanol-acetonitrile solvents; calorimetry of dissolution; 18-crown-6; ether; solvation; enthalpy; COMPLEXES; CROWN; ENTHALPIES; MIXTURES; WATER;
D O I：
10.1134/S0036024413070182
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 dissolution of 18-crown-6 ether (18C6) over a wide range of compositions of mixed methanol-acetonitrile solvents are determined via calorimetry at 298.15 K. It is found that passing from methanol to acetonitrile to x (AN) = 0.6 mole fraction is accompanied by a sharp increase in the exothermicity of 18C6 solvation. It is concluded that a further increase in the aprotic component of a binary mixture leads to no appreciable changes in the enthalpy of solvation of the macrocycle.
引用
收藏
页码：1076 / 1078
页数：3
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