Nickel complexes of S-benzyl-β-N-(furyl) methylenedithiocarbazate

Abstract

Several new mixed ligand complexes of composition [Ni(NS)L X₂.H₂O] (L = PPh₃, AsPh₃ or OPPh₃; X = NO₃^-, Cl^- or NCS^-) have been synthesized. The schiff base ligand N,S is obtained by the condensation of furfural with S-benzyldithiocarbazate. The Schiff base S-benzyl-β-N-(furyl)methylenedithiocarbazate acts as a bidentate N,S ligand. Elemental analyses, magnetic and spectral data support octahedral structure for nickel (II) in the above complexes. In alkaline medium, complexes with the deprotonated ligand of compositions [Ni(NS^-)L X] [L = AsPh₃ or OAsPh₃; X = NO₃^-] and [Ni(NS^-)₂] have also been isolated. These complexes are probably square planar.