Polarographic Study of the Coordinated System Cadmium-Ii Neutral Alanine Alaninate Ion

Abstract

The polarographic method is applied to the study of coordinated system Cd(II))neutral alanine-alaninate ion in aqueous medium. The ionic strength has been maintained constant at .+-. = 1,0 M adjusted with NaClO4. The stability constants of the complexes determined were: Cd A]2+ (.beta.10 = 7,3), Cd A2]2+ (.beta.20 = 14), Cd A3]2+ (.beta.30 = 2,7 .cntdot. 102), Cd (A-)]+ (.beta.01 = 1,15 .cntdot. 104), Cd (A-)2] (.beta.02 = 2,7 .cntdot. 107), Cd (A-)3]- (.beta.03 = 8,1 .cntdot. 109), Cd A (A-)+ (.beta.11= 1.7 .cntdot. 105), Cd A (A-)2] (.beta.12 = 1,08 .cntdot. 108) y Cd A2 (A-)]+ (.beta. = 3,5 .cntdot. 105).