Electrochemical Studies of Copper(II) Complexes with Oxoglutarate at Dropping Mercury Electrode in Aqueous Medium

Abstract

The composition and stability constants of complexes formed by copper(II) with oxoglutarate have been investigated in aqueous medium. The complexes with metal to ligand ratio as 1:1, 1:2, 1:3 have been reported at pH 6.8. The values of formation constants log β₁ = 2.66, log β₂ = 3.34, log β₃ = 4.37 at 303 K and log β₁ = 2.14, log β₂ = 3.32, log β₃ = 3.39 at 313 K were calculated by DeFord and Hume method. The mathematical Mihailov method was also used. Thermodynamic functions and kinetic parameters have been determined.