SYNTHESIS AND CHARACTERIZATION OF SCHIFF BASE 3-[2-(HYDROPEROXYIMINO)-1,2- DIPHENYLETHYLIDENE]HYDRAZINYLIDENE} METHYL]PHENOL METAL (II) COMPLEXES

Abstract

A new series of Fe(II), Co(II) and Ni(II) complexes of the Schiff base ligand, 3-[ 2-(hydroperoxyimino)-1,2-
diphenylethylidene]hydrazinylidene}methyl]phenol (C21H16N3O2
), was synthesized in an ethanolic medium. The Schiff
base was derived from the condensation reaction of 3-hydroxybenzaldehyde and benzilmonoximehydrazide at refluxed
condition. Elemental analysis, FT(IR), Electronic absorption and PMR spectral data, molar conductance measurements
and melting points were used to characterize the Schiff base and the metal complexes. From the physico-chemical
analysis data, the prepared metal complexes formed had the general formulae [ML2
], where L = Schiff base ligand
(C21H16N3O2
) and M = Co, Ni and Fe. On the basis of FT(IR), electronic absorption spectra, and NMR data, “O” and “N”
donor atoms of the Schiff base ligand participated in coordination with the metal (II) ions, and thus, a six coordinated
octahedral geometry for all these complexes was proposed. Molar conductance studies on the complexes indicated they
were non-electrolytic in nature.