Sythesis, characterization and antibacterial properties of nickel (ii) Schiff base complex derived from benzoin and oamino benzoic acid

Abstract

The complex of nickel (II) with Schiff base derived from benzoin and o-amino benzoic acid have been prepared and characterized by Infrared spectral analysis, conductance measurement, UVvisible spectral studies and elemental analysis. The melting point of the schiff base determined is 120^oC. The decomposition temperature of nickel (II) complex is 155^oC, while the molar conductance value is 10.7 ohm^-1cm²mol^-1. Antimicrobial screening of the compounds were carried out in-vitro against Escherichia coli, Salmonella Typhi (Gram negative) and Staphylococcus aureus, Streptococcus spp. (Gram positive). The bioassay reveals a considerable activity of the Schiff base complex against the bacterial isolates.

Keywords: Schiff base, benzoin,, ligand, complex, bioassay.