Synthesis and characterization of mixed nickel thiosemicarbazone complexes


  • Hana Bashir Shawish
  • Mohd Jamil Maah
  • Siti Nadia Abdul Halim



2, 3, 4-trihydroxybenzaldehydethiosemicarbazone, nickel(II), triphenylphosphine, 1, 10-phenanthroline, 2-bipyridine,


Three nickel thiosemicarbazone mixed ligands complexes have been synthesized. Complexes with the formula [NiL(PPh3)]Cl, [Ni2L2(Phen)],
[Ni2L2(Bpy)] (where L= 2,3,4-trihydroxybenzaldehydethiosemicarbazone, PPh3=Triphenylphosphine, Phen=1,10-phenanthroline, Bpy= 2,2 –Bipyridine)
have been characterized by IR spectroscopy, as well as elemental analysis. The structure of [NiL (PPh3)]Cl has been determined by X-ray
crystallography. The crystal structure of this complex shows that the Schiff base ligand functions as an N,O,S chelating anion to the phosphine –
coordinated nickel(II) atom, which exists as a distorted square – planar geometry.


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