SOLVENT INFLUENCE UPON COMPLEX-FORMATION BETWEEN CROWN-ETHERS AND UNPROTONATED AMINES

被引：23

作者：

BUSCHMANN, HJ ^{[1
]}

WENZ, G ^{[1
]}

SCHOLLMEYER, E ^{[1
]}

MUTIHAC, L ^{[1
]}

机构：

[1] UNIV BUCHAREST,FAC CHEM,DEPT ANALYT CHEM,BUCHAREST,ROMANIA

来源：

THERMOCHIMICA ACTA | 1995年 / 261卷

关键词：

AMINES; COMPLEXES; CROWN ETHERS; SOLVATION; TITRATION CALORIMETER;

D O I：

10.1016/0040-6031(95)02384-E

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The complexation reactions of some primary and secondary amines with crown ethers have been studied by means of calorimetric titrations. Thus, the stability constants and values of the reaction enthalpies and entropies were obtained. The values of the stability constants are nearly identical in all solvents examined. However, the values of the reaction enthalpies and entropies are influenced by solvation effects. In non-polar solvents such as toluene, cyclohexane, and carbon tetrachloride, complex formation with the amines is only favoured by entropic contributions. The values of the reaction enthalpies are rather small and nearly identical in these solvents.

引用

页码：1 / 5

页数：5

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