Synthesis and characterization of some complexes of Schiff-base condensation ligands

ABSTRACT

The reaction of p-aminobenzoic acid with benzaldehyde results Schiff-Base[I] which reacts with urea under refluxing conditions and to produce product [II] that was reacted with two moles of oxalic acid to give compound [III]. The metal complexes of compound [III] with Fe[II], Co [II], Ni [II], Cu [II], Zn [II] and UO[2] [II] were prepared in the ratio 1 1, 2 1 [M L] and their structures were characterized on the basis of elemental analysis, IR, UV, [1]HNMR spectra and conductometric titrations. The Fe, Co, Ni and Cu- complexes showed satisfactory results as indicated from pigments evaluation studies and colour measurements