Paper Title
Electro-Analytical Studies of Formation Constants of Mixed-Ligands Complexes of Cadmium(II) with some Bio-Potentially Important Amino Acids (L-Glycine, Dlthreonine) and 4,4,4-Trifluoro-1(2-Napthyl)Butane-1,3-Dione in 60% Acetonitrile Medium

Abstract
Intensive electroanalytical study of Cd(II) with amino acids (L-Glycine, DL-Threonine) and the ligand 4,4,4-trifluoro-1-(2-napthyl)butane-1,3-dione have been carried out keeping constant ionic strength (l = 1), at 308 K, by using KNO3 in 60% Acetonitrile media.It was found that the reduction of all the mixed-ligand-metal-complex - systems taken place, are diffusion controlled and reversible involving two electrons. For the simple system of Cd(II) with 4,4,4-trifluoro-1-(2-napthyl)butane-1,3-dione and Cd(II) with the amino acids, the stability constants were determined first by DeFord and Hume and then evaluated by Schaap and McMaster method. The steadily increasing voltage was supplied to record the current by the help of the plot between current – voltage and the value of E1/2 was calculated. Formation constants of the metal-ligands complexes calculated which demonstrate different degrees of reversibility in their electroreduction process. The schematic diagrams were used to explain the stability constants of mixed ligand complexes along with statistical data. Keywords - Voltammetry, Chelates, Amino Acids, Metal Complexes, Reductive Electroanalytical Methods, Mixed-ligands Complexes, Stability Constants