SYNTHESIS , AND SPECTROPIC CHARACTERIZATION OF SCHIFF BASE COMPLEXES OF CINNAMALDEHYDE HYDRAZONES

* O .W. Salawu  and  A.O  Abdulsalam

Department Of Chemistry

 Kogi State University, Anyigba , Anyigba, Nigeria

e-mail: olalekansalawu5@yahoo.com

ABSTRACT

The synthesis and structural features of some Bidentate Schiff  base complexes are reported. The ligand was derived by the condensation of Cinnamaldehyde hydrazone with different benzaldehyde . The co-ordination of the metal salts based on this  ligand with transition metal ions viz, Cu⁺², Ni⁺², Mn⁺², Co⁺² and  Fe⁺² were prepared and studied for their metal : ligand ratio (M/L),it has been found that ligand forms complexes in 1:2 ratio. The metal complexes were characterized by elemental analysis, molar conductance, magnetic momentum measurements, melting point ,  IR,  spectral data and uv-visible spectral data . An octahedral geometry was proposed for all metal complexes. The conductivity data show that all these complexes are non electrolytes. The ligands and their metal complexes were screened for Gram positive bacteria Bacillus Substlis and Gram negative bacteria E.Coli .

Keywords: Hydrazones, Cinnamaldehyde ,  Antibacterial activity, Antifungal activity, Transition metal complexes and IR studies .