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The binding of metal ions by mercaptoacids. I. Formation constants for the complexes of mercaptosuccinate with zinc(II), nickel(II), and hydrogen ions

Authors
Journal
Journal of Inorganic Biochemistry
0162-0134
Publisher
Elsevier
Publication Date
Volume
28
Issue
1
Identifiers
DOI: 10.1016/0162-0134(86)80018-6

Abstract

Abstract Formation constants for zinc(II) and nickel(II) complexes of mercaptosuccinate in aqueous solution have been determined at 37°C and 150 mmol dm −3 chloride medium by potentiometric titrations using a glass electrode. The EMF data obtained have been analyzed using the ESTA computer program library. It is concluded that the main complexes formed are as follows: Zn(MSA)H, Zn 2(MSA) 2H −, Zn 2(MSA) 2 2−, Zn(MSA) 2 4−, Ni 4(MSA) 3 −, Ni(MSA) −, Ni 2(MSA) 2 2−, and Ni(MSA) 2 4−.

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