A Polarographic Study of Cd(II) and Pb(II)-Imidazole-Sulphosalicylate Mixed Ligand Complexes

Abstract

The stability constant of mixed ligand complexes of imidazole   and sulphosalicylate with Cd(II) and Pb(II) were determined   polarographically. The values of stability constants of   these soluble mixed ligand complexes [Cd(Im) (SSA)],   [Cd(Im) (SSA)₂]^2-, [Cd(Im)₂ (SSA)] and [Pb(SSA) (Im)] are   found to be log β₁₁ = 4.19, log β₁₂ = 3.70, log β₂₁ = 4.38 and   log β₁₁ = 4.08, respectively at pH = 7.4 and 25 ± 0.1 ºC.