Bis[1,2-bis-(4-tert-butyl-phen-yl)ethyl-ene-1,2-di-thiol-ato(1-)]nickel(II) pentane 0.25-solvate.

The title compound, [Ni(C(22)H(26)S(2))(2)], 1, is a square-planar D (2h) -symmetric compound that occurs on a general position in non-centrosymmetric tetra-gonal P4(1)2(1)2 (No. 92) with ¼ eq of n-pentane (C(5)H(12)) as co-crystallite. Intra-ligand bond lengths show the di-thiol-ene ligands to be in their half-oxidized radical monoanionic form. Inter-molecular (t) Bu-C-H⋯arene(centroid) and (t) Bu-C-H⋯NiS(2)C(2 centroid) close contacts guide the packing arrangement for 1.