Crystal structure of cis-bis-(N-isopropyldithiocarbamato)nickel(II)

Abstract

The crystal structure of the title compound, has been established by Patterson and Fourier methods from single-crystal photographic X-ray diffraction data, and was refined by full-matrix least-squares to R 0·09 (673 reflections). Crystals are trigonal, space group Rc, a= 22·13(1), c= 15·06(3)Å, Z= 18.

The structure is the first example of a square-planar bis(dithiocarbamato) complex with different ligand substituents to adopt the cis-conformation in the solid; this imposes a marked distortion on the NiS₄ molecular core and is due to strong hydrogen bonding forces between the –NH– hydrogen and sulphur atoms of adjoining molecules, the overall molecular packing being a cylindrical array down c.