A NOVEL Mn(II) METAL COMPLEXES OF N, O DONOR METHYL SUBSTITUTED SALICYLOYL PYRAZOLE OXIMES: SYNTHESIS, SPECTRAL STUDIES AND ANTIMICROBIAL EVALUATION

Abstract

A series of four novel Schiff base methyl substituted salicyloylpyrazoleoxime and their Mn(II) complexes were synthesized and characterized by elemental analysis and thermal analysis, UV-Visible, IR, NMR spectroscopy. The elemental analysis data suggest that the Schiff base Mn(II) complexes have 1:2 (M:L) stoichiometry. The molar conductivity data show them to be non-electrolytes. Based on analytical and spectral data, four-coordinate geometry was assigned for all complexes. The electronic absorption spectra suggest the square planer geometry for the complexes. The ligand salicyloylpyrazoleoximes and their Mn(II) complexes were tested against gram positive bacteria Bacillus subtilis, Staphylococcus aureus, Actinomycetes and gram negative bacteria Klebsiella, Pseudomonas aeruginosa. The most of the ligands and metal complexes possess moderate antimicrobial activity.