The effect of magnetic field on the stability of (18-crown-6) complexes with potassium ion

被引：20

作者：

Eshaghi, Z

Gholizadeh, M

机构：

[1] Sabzevar Teacher Training Univ, Dept Chem, Sabzevar, Iran

[2] Payam E Noor Univ, Ctr Fariman, Dept Chem, Tehran, Iran

来源：

TALANTA | 2004年 / 64卷 / 02期

关键词：

macrocyclic polyether; 18-crown-6; metal ion; magnetic field stability constant;

D O I：

10.1016/j.talanta.2004.02.039

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Macrocyclic polyethers are ligands with selectivity for metal ions. In order to understand the interactions between ligand, ion and solvent we resorting to study of magnetic field effect on ion-macrocyclic complexes. Therefore, we studied the complexation between 18-crown-6 and potassium ion in water through the conductometry technique (in 25+0.05degreesC) by a nonlinear least-square program (Genplot) under magnetic field. We observed that stability constants of complexes in the presence of the magnetic field, were decreased. Like-wise, we observed that, magnetic field influenced on ion, solvent and ligand one by one. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：558 / 561

页数：4

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