A Comparative Study of Stability Constant and Order for Mixed-Ligand Ternary Complexes of Cd (II) and Pb (II) with 2-Aminosuccinic Acid and 2, 4-dihydroxypyrimidine in Two Different Ratios

Mixed-ligand ternary complexes of Cd (II) and Pb (II) metal ions have been investigated with 2-Aminosuccinic acid and 2,4-dihydroxypyrimidine in 1:1:1 and 1: 2: 2 molar ratios at silver-silver chloride electrode by the potentiometric technique. Equilibrium studies of ternary complexes of stochiometery of MAB in addition of binary MA and MB complexes with both metal ions. The stability constants and stability order of investigated binary and ternary complexes were determined by using SCOGS computer programme and the complex formations were elucidated with the aid of species distribution curves.