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Title: Synthesis and characterization of lanthanide complexes of 1-phenyl-3-methyl-5- hydroxy-4-pyrazolyl-phenyl ketone-2ʹ-picolinoyl hydrazone
Authors: Thaker, B T
Modi, Chetan K
Issue Date: Dec-2002
Publisher: NISCAIR-CSIR, India
Abstract: The  ligand, 1-phenyl-3-methyl-5-hydroxy-4-pyrazolyl-phenyl ketone-2ʹ-picolinoyl hydrazone (HL) is prepared by condensation of 1-phenyl-3-methyl -4-ben zoyl-5-pyrazolone with 2-picolinic acid hydrazide. Seven complexes of lanthanides with HL of the type [Ln (HL)3].2 H2O (where Ln=trivalent lanthanides such as La, Ce, Nd, Sm, Gd, Dy and Er) have been synthesized and characterized by complexometric titration of lanthanoid ions,elemental analysis, molar condudance, IR, 1H NMR, electronic spectral studies, and TGA analysis, IR spectra and thermogram shows the presence of two water moieties outside the coordination sphere and are non-electrolytic in nature. The complexes appear to be nine -coordinated and ligand act as a tridentate ligand.
Page(s): 2544-2547
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.41A(12) [December 2002]

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