Synthesis and Structural Studies of Cr (Iii), Mn(Ii) and Fe(Iii) Complexes of 2(2-Nitro Benz Hydrazonyl) Benzimidazole (NBHB)

G.  H. Anuradha* and A. V. Chandra Pal

¹Department of Chemistry R.B.V.R.R. Women’s College Hyderabad - 500 027 (India) ²Department of Chemistry, Osmania University, Hyderabad - 500 027 (India)

Transition metal complexes of Cr(III), Mn(II), Fe(III) with the ligand 2(2-Nitro benz hydrazonyl) benzimidazole (NBHB) have been synthesized. These are characterized on the basis of analytical, conductance, thermal, magnetic data and infrared, electronic and spectral data. The ligand NBHB is a potential chelating agent. The ligand NBHB is behaving as a neutral bidentate, NN donor coordinating through azomethine nitrozens (ring & side chain). The stoichiometry of the complexes has been found to be 1:1 (metal: ligand) in Cr (III) and Fe (III) complexes 1:2 in case of Mn (II) complex. The ligand and metal complexes were screened for their physiological activities against the E. coli, S. aureus and Proteus sp.

NBHB; Metal complexes; antimicrobial activity