Studies in influence of ionic strength of medium on the complex equilibria of substituted hydroxy-1,3-popandiones with CrIII and LaIII metal ions pH metrically

被引：0

作者：

Thakur, S. D. ^{[1
]}

Munot, K. P. ^{[2
]}

Deshmukh, R. D. ^{[1
]}

Tihile, M. S. ^{[1
]}

机构：

[1] RDIK & NKD Coll, Amravati 444701, Maharashtra, India

[2] SPM Coll, Ghatanji, Maharashtra, India

来源：

JOURNAL OF THE INDIAN CHEMICAL SOCIETY | 2012年 / 89卷 / 10期

关键词：

Ionic strength; substituted hydroxy-1,3-propanedione; dioxane-water; FORMATION-CONSTANTS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The solution studies (the proton-ligand stability constant pK and metal-ligand stability constants log K) of binary (1 : 1) complexes of Cr-III and La-III with 1-(2'-hydroxy-5'-bromophenyl)-3-(2'-chlorophenyl)-1,3-propanedione [HB2CP] [L-1] and 1-(2'-hydroxy-5'-bromophenyl), 3-(4'-nitrophenyl)-1,3-propanedione [HB4NP] [L-2] have been performed at 0.02 to 0.1 mol dm(-3) ionic strength at (29 +/- 0.1 degrees C) in 70% dioxane-water mixture pH-metrically. The pK and log K values are utilized to estimate the thermodynamic stability constants at zero ionic strength and to know the exact nature of complexation equilibria.

引用

页码：1399 / 1404

页数：6

共 2 条

[1] pH-metric studies on formation constants of the complexes of substituted pyrazoles with some lanthanide metal ions and the influence of ionic strengths on complex equilibria in a 70% dioxane-water mixture
Naik, A. B.
Narwade, M. L.
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY, 2009, 35 (12) : 932 - 937
[2] pH-metric studies on formation constants of the complexes of substituted pyrazoles with some lanthanide metal ions and the influence of ionic strengths on complex equilibria in a 70% dioxane-water mixture
A. B. Naik
M. L. Narwade
Russian Journal of Coordination Chemistry, 2009, 35 : 932 - 937

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