Synthesis and Characterization of 1-phenyl-3-methyl-4-stearoylpyrazol-5-one and Its Lanthanum(III) and Tungsten(VI) Complexes
International Research Journal of Pure and Applied Chemistry(2020)
Abstract
The ligand, 1-phenyl-3-methyl-4-stearoylpyrazol-5-one (HSPy), and its La(III) and W(VI) complexes were synthesized and characterized spectroscopically using elemental analysis, UV-visible, IR, 1H and 13C NMR. Physical properties such as colour, melting points, conductivity measurements and solubility profile were also investigated. La(III) and W(VI) reacted with the ligand in the metal-ligand mole ratios of 1:3 and 1:2 to form neutral complexes of diaquo-trischelate La(SPy)3.2H2O and dioxoaquo-bischelate, WO2(SPy)2.H2O respectively.
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Key words
complexes
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