Synthesis and Characterization of Transition Metals Complexes with 2-Hydroxy-5-chloro Acetophenone Antipyrine

Abstract

The Schiff base 2-hydroxy-5-chloro acetophenone antipyrine on reaction with Ti(III),V(III), VO(IV), Mn(II), Mn(III) and Fe(III) to form coordination compounds having general formula [M(C₁₉H₁₈N₃O₂)_2· 2H₂O]·3Cl where M = Ti(III), V(III), Fe(III) [VO(C₁₉H₁₈N₃O₂)_2·2H₂O]SO₄, [Mn(C₁₉H₁₈N₃O₂)₂]·3Cl and Mn(C₁₉H₁₈N₃O₂)₂]·2H₂O]·2Cl. These adducts have been characterized on the basis of elemental analyses, molar conductance, infrared and visible spectra, magnetic susceptibility measuements and TGA. The ligand behaves in bidentate manner. All these compounds are paramagnetic in character. Ti(III), V(III), VO(IV), Mn(II) and Fe(III) complexes have octahedral geometry, while Mn(III) complex show square pyramidal geometry.