Ionic strength dependence of formation constants: Complexation of dioxovanadium(V) with isoleucine

被引：19

作者：

Gharib, F ^{[1
]}

Fard, NL

机构：

[1] Shaheed Beheshti Univ, Dept Chem, Tehran, Iran

[2] Islamic Azad Univ, Dept Chem, N Tehran Branch, Tehran, Iran

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2000年 / 45卷 / 02期

关键词：

D O I：

10.1021/je990152d

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The stability constant for complexation of VO(2)(+) with isoleucine has been determined at different ionic strengths ranging from 0.2 to 0.8 mol dm(-3) of sodium perchlorate as a background salt, in the pH range 1.3-10 with high ligand to metal ratios, by a combination of potentiometric and spectrophotometric methods at (25 +/- 0.1) degrees C. Our studies have shown that isoleucine forms mononuclear 1:1 and 1:2 complexes with VO(2)(+) ion. The protonation constants of isoleucine were also determined potentiometrically at different ionic strengths.

引用

页码：210 / 213

页数：4

共 16 条

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