SYNTHESIS, CHARACTERIZATION, THERMAL STUDIES AND BIOLOGICAL-ACTIVITY OF IRON(III) COMPLEXES WITH SOME ACYLHYDRAZINES

Iron(III) complexes of the type [FeL2x2]X.nH2O, where L = benzoylhydra zine (BH), isonicotinoylhydrazine (INH), salicyloylhydrazine (SH), oxa loyldihydrazine (ODH) and malonoyldihydrazine (MDH); X = Cl-, NO3-, SC N- and 1/2 SO42-; n = O-3, were prepared and characterized with the he lp of elemental analyses, molar and solid state conductance, thermal, magnetic, infrared and electronic spectral studies. The complexes are highly insoluble in common organic solvents, decompose above 200-degre es-C and are spin free octahedral. The ligands coordinate to the metal atom through >C=O and NH2. The complexes show multistep exothermic de composition patterns. The ligands as well as their complexes show mode rate antifungal and antibacterial activity.