Complex formation of indium(iii) with citric acid in aqueous solution

被引:0
作者
Ivanova V.Y. [1 ]
Chevela V.V. [1 ]
Bezryadin S.G. [2 ]
机构
[1] A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University, 29 ul. Kremlevskaya, Kazan
[2] Orenburg State Agrarian University, 18 ul. Chelyuskintsev, Orenburg
关键词
complex formation; indium(iii) citrate complexes; stability; stoichiometry;
D O I
10.1007/s11172-015-1082-4
中图分类号
学科分类号
摘要
Complex formation of In3+ ion with citric acid in an aqueous solution was studied by pH-metric titration at the molar ratio of the reactants [In3+] : [H4Cit] = 1 : 1, 1 : 2, and 1 : 3 in a range of pH 2—10. The mathematical simulation of equilibria in an indium(iii)—citric acid system was performed using the CPESSP program package. The formation of 1 : 1, 1 : 2, and 1 : 3 indium(iii) citrate complexes with different degrees of nuclearity and protonation was established. The equilibrium constants of formation of the complexes were calculated. The predomination of the polynuclear indium(iii) citrate complexes at the equimolar metal to ligand ratio of was observed in almost the whole pH range studied (3—10). © 2015, Springer Science+Business Media New York.
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页码:1842 / 1849
页数:7
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