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ELECTROCHEMICAL INVESTIGATION OF TERNARY COMPLEXES OF CD(II) WITH SOME AMINO-ACIDS (ALPHA-ALANINE AND BETA-ALANINE) AND CITRATE ANIONS
Faculty
Science
Year:
1991
Type of Publication:
Article
Pages:
44-47
Authors:
KILLA, HM, MABROUK, EM, GHONEIM, MM
Journal:
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE EDITIONS SCIENTIFIQUES ELSEVIER
Volume:
Research Area:
Biochemistry \& Molecular Biology; Chemistry
ISSN
ISI:A1991FB26300010
Keywords :
TERNARY COMPLEXES, CD-ALANINE-CITRATE COMPLEXES
Abstract:
The ternary complexes of Cd(II) with citrate anions as a primary ligand and amino acids (alpha-alanine and beta-alanine) as a secondary ligand have been investigated using differential pulse (d.p) polarography. Formation of three mixed complexes, {[}Cd(amino acid) (citrate)], {[}Cd(amino acid) (citrate)2] and {[}Cd(amino acid)2 (citrate)] is observed in each case. The stability constants and the mixing constants of the ternary system have been calculated, as well as the stabilization constants. The reduction was reversible and diffusion controlled. The various equilibria involved in the ternary systems are given also.
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