Abstract

Spectral and biological behaviour of complexes derived some bivalent metals and Schiff base

Complexes of 2-Aminobenzimidazole-5-bromosalicylaldehyde (HL) with chlorides of nickel(II) and manganese(II) were synthesized. The molar ratio metal:ligand in the reaction of the complex formation was 1:2. It should be noticed that the reaction of the metal salts yielded bis (ligand) complexes of the general formula M(L)2 (M = NiII, MnII). The complexes were characterized by elemental analysis, molar conductivity measurements, magnetic susceptibility measurements, IR, electronic spectra, mass and thermal studies. Both the complexes have octahedral configuration around the metal ion. In both the complexes, ligand act as tridentate (NNO donor) coordinating by participation of the imidazole nitrogen of the benzimidazole ring, nitrogen of the azomethine group and oxygen of the deprotonated hydroxyl group. The Schiff base and its metal complexes have been screened for their antifungal activity against Candida albicans and Aspergillus niger.


Author(s): Suman Malik, Archana Singh and Nayaz Ahmed

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