Synthesis and Characterization of some Transition Metals Complexes with new Ligand Azo Imidazole Derivative

Abstract

AZO complexes synthesized by binding metal ions as Mn(II), Co(II), Ni(II) and Cu(II), with the ligand (L) [ethyl 4-((E)-(5-oxo-1-(((1E,2E)-3-phenylallylidene)amino)-2-thioxo-2,5-dihydro-1H-imidazol-4-yl)diazenyl)benzoate] was prepared from three steps ,first step preparation Schiff base product of condensation reaction by reaction Thiosemicarbazide with cinnamaldeyde, second step preparation the Imidazole ring close by reaction ligand 1 with chloroethylacetate, finally preparation Azo ligand(Diazanium compound) by reaction ligand 2 with benzocain. Characterized the ligands and complexes in their solid state using the elemental micro analysis (C.H.N.S), flame atomic absorption. UV-vis spectroscopy, FT-IR, magnetic susceptibility measurements, Mass spectrum, 1H-NMR spectra and electrical molar conductivity. These techniques produced comparable results with those obtained for the solid complexes. From the data of all techniques, octahedral geometry was proposed for Mn(II), Co(II), Ni(II) and Cu(II) complexes.

Keywords

• schiff base derivative
• 2-thioxoimidazole derivative
• cinnamaldeyde
• azo ligand with metal complexes.