Synthesis and Crystal Structure of Square-Planar and Mixed Ligand Octahedral Nickel(II) O,o′-Dicyclopentyl Dithiophosphate Complexes

Abstract

Ammonium O,O'-dicyclopentylphosphorodithioate (dcpdtp) has been synthesized from phosphorus pentasulphide and cyclopentanol in the presence of ammonia gas. Its complexes, I=[Ni(dcpdtp)(2)] and II= [Ni(bP)(2)(dcpdtp)(2)] (bp=4-benzylpiperidine), have been synthesized and their structures characterized by using UV-vis, IR spectroscopy, magnetic susceptibility measurements and X-ray single crystal structural analysis. The complexes crystallize in the triclinic system (space groups P (1) over tilde) and exhibit a slightly distorted square planar [NiS4] and trans-octahedral [NiS4N2] geometry for the complexes I and II, respectively.