Conductance study of the thermodynamics of binding of some macrocyclic polyethers with Tl+ ion in dimethylformamide-acetonitrile mixtures

被引：36

作者：

Khayatian, G ^{[1
]}

Shariati, S

Shamsipur, M

机构：

[1] Kurdistan Univ, Dept Chem, Sanandaj, Iran

[2] Razi Univ, Dept Chem, Kermanshah, Iran

来源：

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY | 2003年 / 45卷 / 1-2期

关键词：

Tl+ complexes; crown ethers; conductance; stability; enthalpy; entropy; mixed solvent;

D O I：

10.1023/A:1023024206317

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The complexation reactions between Tl+ ion and dibenzo-30-crown-10 (DB30C10), dibenzo-24-crown-8 (DB24C8), dibenzo-21-crown-7 (DB21C7), and aza-18-crown-6 (A18C6) were studied in different dimethylformamide-acetonitrile mixtures at various temperatures. The formation constants of the resulting 1 : 1 complexes were determined from the molar conductance-mole ratio data and found to vary in the order A18C6 > DB30C10 > DB21C7 > DB24C8. The enthalpy and entropy of complexation were determined from the temperature dependence of the formation constants.

引用

页码：117 / 121

页数：5

共 41 条

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AMINI MK, 1991, INORG CHIM ACTA, V183, P65

[2] MOLECULAR COATING - COMPLEXATION OF THE SODIUM-CATION BY DIBENZO-24-CROWN-8 [J].