Authors : A. Yaul, A. Kalserpe, J. Makode, S. Yaul and A. Aswar
Page Nos : 230-234
Description :
Abstract:
Mn(III), Fe(III) and Zr(IV) complexes with a new hydrazone Schiff base ligand derived by the condensation of 2,4-dihydoxy-5-nitroacetophenone and 2,4-dichlorobenzoylhydrazide have been synthesized. The isolated complexes were characterized by elemental analyses, molar conductance, spectral (IR and UV-Vis), magnetic moment measurement and thermal analysis. The IR spectral data suggest that the ligand coordinate in a tridentate manner via the azomethine nitrogen, phenolic and enolic oxygen atoms. The nature of water molecules inside and outside the coordination sphere was determined using thermal data (TGA) and weight loss method. The electronic spectra of the complexes as well as their magnetic moments suggest octahedral geometry for Mn(III) and Zr(IV) complexes whereas square pyramidal geometry for Mn (III) complex.
