Synthesis and Spectrochemical Studies for Some Transition Divalent Metal Complexes with New Azo Ligand Derived from Pyrimidine ring

Abstract

The New Heterocyclic ligand 4-[(2,4,6-trioxohexahydropyrimidin-5-yl)diazenyl]benzoic acid (L) was prepared  to give the final Didentate Heterocyclic compound with different donor atom system. The Prepared ligand was characterized using FTIR, ¹H-NMR, C.H.N. Elemental analysis and UV.-Vis. techniques.

        Some chelating metal complexes were Prepared with Co (II), Ni(II) and Cu(II) ions and characterized by FTIR, UV.-Vis. ,Molar conductance, C.H.N. Elemental analysis and magnetic susceptibility. The Purity of azo dye ligand and prepare complexes were tested by Thin – Layer Chromatography (TLC) Technique . The complexes were found to have the general formula [M(L)₂Cl₂] where M= Co (II), Ni(II) and Cu(II) . The FTIR results demonstrated that the coordination site were the azo Nitrogen atom and Oxygen atom of Carbonyl group of the azo ligand . The electronic spectral and magnetic measurement data indicated that the complexes exhibited octahedral geometry were suggested for there complexes, (M:L) ratio was (1:2) for all prepared complexes while the conductivity measurements shows non – electrical properties.