Synthesis and Studies of New Ternary Complexes of Transition, Lanthanides and Actinides Metal Ions with some Organic Ligands

Abstract

Poteniometric studies of interaction between transition metal ions, Cu(II), Ni(II), Co(II), Zn(II) and Cd(II), F-block ions UO2(VI), Th(IV) Sm(III) and Er(III) and mixed ligands are described. Benzyl-monohydrazone-3- hydrazino-4-Benzyl-6-phenyl Pyridazine (BHP) used as primary ligand and 8-hydroxy quinolone (8-HQ), 2-Amino4-methyl pyridine (2-AMP) or 1,10-phenanthroline (1,10-Phen) used as secondary ligand. Mixed complexes are formed in 75% (v/v) dioxane-water and 1:1:1 molar ratio of M+n to BHP as a primary ligand and 8-HQ, 2-AMP or 1,10-Phen as a secondary ligand. It was found that the order of stability constant for complexes of transition metal ions runs according to:Cu(II) > Co(II) > Ni(II) > Cd(II) > Zn(II). While the order that obtained for F-block complexes are runs according to: Th(IV) > UO2(VI) > Sm(III) > Er(III). Also, Ni(II), Co(II) and Cu(II) ternary complex systems in solid states were isolated and characterized by different techniques