Synthesis and X-ray Crystal Structure of Bis(O-propylxanthato)-bis(3-chloropyridine)nickel(II)

摘要

A six-coordinated Ni(II) complex, bis(O-propylxanthato)bis(3-chloropyridine)nickel(II), [Ni(C₅H₄NCl)₂(S₂COC₃H₇)₂], has been synthesized by the reaction of bis(O-propylxanthato)nickel(II) with 3-chloropyridine in acetone. The structure of the title compound was elucidated by a single-crystal X-ray diffraction method. The compound crystallizes in the monoclinic space group P2₁/c with unit-cell parameters: a = 9.4079(1), b = 10.7323(2), c = 11.7498(2)Å and β = 96.443(1)°. The crystal structure was solved by direct methods and refined by full-matrix least-squares procedures to a final R-value of 0.023 for 2064 observed reflections. The asymmetric unit comprises half a molecule and the nickel(II) cation lies on an inversion centre. The pyridine ring is coplanar, and is held almost perpendicular to the dithiocarbonato group. Molecules in the crystal are packed together to form layers, which appear to extend diagonally along the ac-plane.