Spectrophotometric Evaluation of Stability Constants of Copper, Cobalt, Nickel and Zinc with 2-Thiobarbituric Acid in Aqueous Solution

被引：1

作者：

Ahmadi, F. ^{[1
]}

Sarrafi, A. H. M. ^{[1
]}

Ghashghaee, M. M.

机构：

[1] Gachsaran Azad Univ, Dept Chem, Gachsaran, Iran

来源：

E-JOURNAL OF CHEMISTRY | 2009年 / 6卷

关键词：

2-Thiobarbituric acid (TBA); Spectrophotometric; Stability constant; DATAN; CRYSTAL-STRUCTURE; COMPLEXES; COMPOUND; MIXTURES; LIGANDS;

D O I：

10.1155/2009/965619

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Stoichiometry and equilibrium study of ion-ligand conducted in aqueous solution by spectrophotometry. Stability constants of the complexes are determined at 25 degrees C, ionic strength was adjusted to 0.2 (% w/v) with NaCl. The pH was adjusted to 6. 2-Thiobarbituric acid-ion complexes' stability was calculated in aqueous solution using DATAN (Data Analysis program). The results of this method denote formation specie ML(2). The log K for ions Cu(+2), Co(+2), Ni(+2) and Zn(+2) were 4.89, 4.69, 4.47 and 4.82, respectively.

引用

页码：S47 / S52

页数：6

共 14 条

[1] Thermodynamic study of complexation phenomena of some alkaline earth metal (II) complexes in propanol-1-water mixtures at various temperatures [J].