Synthesis and Characterization of Lanthanide(III) Complexes of 1-Phenyl-3-Methyl-5-Hydroxy-4-Pyrazolyl Propionyl-2'-Picolinoyl Hydrazone

Abstract

The ligand 1-phenyl-3-methyl-5-hydroxy-4-pyrazolyl propionyl-2'-picolinoyl hydrazone (PMHPPr-PHz) was synthesized by condensing 1-phenyl-3-methyl-4-propionyl-5-pyrazolone with 2-picolinic acid hydrazide. The complexes of PMHPPr-PHz with La(III), Ce(III), Nd(III), Sm(III), Gd(III), Dy(III) and Er(III) ions were synthesized. The compositions are properties of the ligand and its complexes were established by elemental analyses, magnetic measurements, molar conductance, IR ¹H NMR, electronic spectra and thermal analyses.