Chloroform as solvent for the complex formation of alkaline salts with crown ethers and cryptands

被引：16

作者：

Buschmann, HJ ^{[1
]}

Wenz, G ^{[1
]}

Schollmeyer, E ^{[1
]}

机构：

[1] Deutsch Text Forschungszentrum Nord W EV, D-47798 Krefeld, Germany

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2001年 / 4卷 / 01期

关键词：

crown ethers; cryptand; complexes; chloroform;

D O I：

10.1016/S1387-7003(00)00195-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complex formation between different crown ethers and the cryptand (2 2 2) with the ammonium and alkali ions was studied in chloroform as solvent using calorimetric titrations. From the reaction enthalpies for the complex formation with 18-crown-6 and the cryptand (2 2 2) as well as from competitive reactions between both ligands no influence of ion pairs can be detected within the experimental error, Stability constants of the complexes formed could only be obtained in case of the complex formation of Na+ with benzo-18-crown-6 and of Cs+ with most of the ligands. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：53 / 56

页数：4

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