Multinuclear complexation equilibria of manganese(II), copper(II), zinc(II) and cadmium(II) with L-2-amino-3-methylbutanoic acid (valine) and nitrilotriacetic acid

Department of Chemistry. University of Allahabad, Allahabad-211 002, Uttar Pradesh, India

E-mail : proLvkrishna@rediffmail.com

Manuscript received 10 March 2005, revised 28 December 2005, accepted 2 January 2006

Equilibrium studies on mixed ligand-mixed metal complexes of mangancsc(II), copper(II),zinc(II) and cadmium(II) with nilrilotriacetic acid and L-2-amino-3-mcthylbutanoic acid (valine) has been performed by potentiometric method. The stability constants of the complexes are determined in aqueous solution at 37 ± 1° (I = 0.1 M NaNO₃). The calculations have been made using SCOGS computer program.