INTERACTIONS OF SOME CROWN-ETHERS, CYCLAM AND ITS TETRATHIA ANALOG WITH ALKALI, ALKALI-EARTH AND OTHER METAL-IONS - AN ELECTROSPRAY MASS-SPECTROMETRIC STUDY

被引：69

作者：

COLTON, R

MITCHELL, S

TRAEGER, JC

机构：

[1] School of Chemistry, La Trobe University, Bundoora

来源：

INORGANICA CHIMICA ACTA | 1995年 / 231卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

ALKALI COMPLEXES; ALKALI EARTH COMPLEXES; CROWN ETHER COMPLEXES; MACROCYCLIC LIGAND COMPLEXES; ELECTROSPRAY STUDY;

D O I：

10.1016/0020-1693(94)04353-W

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Electrospray mass spectrometry (ESMS) has been used to investigate the interactions in solution between three crown ethers (12-crown-4, 18-crown-6, dibenzyl-18-crown-6), 1,4,8,11-tetraazacyclotetradecane (cyclam) and its tetrathia analogue (S-crown) and a variety of metal ions. These include the alkali and alkali earth metal ions, various divalent transition metal ions and main group metal ions such as Cd2+ and Pb2+. The previously proposed relationships between the cation radius and the radius of the crown ether cavity which determine the stoichiometry of the complexes formed are dominant in solution. Although the cavity size of DB-18-C-6 is similar to that of 18-C-6, it behaves as though the cavity is effectively smaller as a result of its less flexible structure. Cyclam gave no complexes containing alkali and alkali earth cations, but ionic species were observed with the transition metal ions. S-crown did form ionic complexes with the alkali metal ions and transition metal ions, but not the alkali earth cations.

引用

页码：87 / 93

页数：7

共 33 条

[1] IDENTIFICATION OF AN EXTENSIVE SERIES OF CATIONIC SILVER HETEROMETALLIC DITHIOCARBAMATE COMPLEXES AND OBSERVATION OF CATALYTIC LIGAND-EXCHANGE REACTIONS BY ELECTROSPRAY MASS-SPECTROMETRY [J].