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
收藏
页码：558 / 561
页数：4
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