Tetra-kis(1-phenyl-1H-imidazole-κN(3))bis-(thio-cyanato-κN)nickel(II).

The title compound, [Ni(NCS)(2)(C(9)H(8)N(2))(4)], crystallizes with two independent half-mol-ecules in the asymmetric unit and the Ni(II) ions situated on centres of symmetry. In both independent mol-ecules, the Ni(II) ion displays a compressed octa-hedral environment formed by four N atoms from the 1-phenyl-1H-imidazole ligands, which define the equatorial plane, with a mean Ni-N distance of 2.119 (11) Å, and two axial N atoms from two NCS(-) anions, with a mean Ni-N distance of 2.079 (7) Å. The crystal packing exhibits weak inter-molecular S⋯S contacts of 3.411 (2) Å.

trans-Tetra-kis(1-allyl-1H-imidazole-κN)bis-(thio-cyanato-κN)nickel(II).

The structure of the title compound, [Ni(NCS)(2)(C(6)H(8)N(2))(4)], consists of isolated mol-ecules of [Ni(NCS)(2)(Aim)(4)] (Aim = 1-allyl-imidazole), which contain a distorted octa-hedral NiN(6) chromophore. The NCS(-) anions are trans and four N atoms from the 1-allyl-imidazole ligands define the equatorial plane. The mean Mn-N(Aim) and Mn-N(NCS) distances are 2.105 (2) and 2.098 (2) Å, respectively. Weak C-H⋯N inter-actions contribute to the crystal packing stability.