Synthesis, physico-chemical and antimicrobial studies on acetylferrocenyl hydrazone derivatives of dichlorobis(cyclopentadienyl)hafnium(IV)

The reactions of Cp2HfCl2 with hydrazones (LH) derived from acetylferrocene and aromatic acid hydrazides (benzoic, 2-chlorobenzoic, 3-nitrobenzoic and 4-toluic) in various stoichiometric ratios have been studied and the compl exes of the types [Cp2Hf(L)Cl] and [CpHf(L)(3)] were obtained. Tentative st ructural conclusions are drawn for the reaction products based upon element al analyses, electrical conductance, magnetic moment and spectral data (u.v .-vis, i.r., H-1-n.m.r. and C-13-n.m.r.). Studies were conducted to assess the growth-inhibiting potential of the complexes synthesized, and the ligan ds, against various fungal and bacterial strains.