Synthesis, characterization and antibacterial studies on Mn(II) and Fe(II) complexes of N, O donor salicyloyl pyrazole oxime Schiff bases

Abstract

Mn (II) and Fe(II) complexes with Schiff bases substituted salicyloyl pyrazole oximes were synthesized by the reaction of CFPHMP, FPHMP, DCFPHMP, CFPHMMP and BFPHMP (see introduction for definitions) with transition metal ion Manganese (Mn2+) and Iron (Fe2+). They were characterized by analytical and spectral methods. The elemental analysis data reveal that the Schiff base metal (II) complexes have 1:2 (M:L) stoichiometry. The molar conductivity data showed them to be non electrolytes. The Schiff bases are bidentate coordinating through the imine nitrogen and phenolic oxygen of salicyloyl pyrazole oximes. Based on analytical and spectral data, four-coordinate geometry is assigned for all complexes. The electronic absorption spectra suqqests the square planer geometry for the complexes. The ligand salicyloyl pyrazole oximes and their Mn (II) and Fe (II) complexes were screened against bacillus subtilis, Staphylococus aureus, actinomycetes and pseudomonas.