4-Cyano-1-(4-nitro­benz­yl)pyridinium bis­(2-thioxo-1,3-dithiole-4,5-dithiol­ato-κ(2) S (4),S (5))nickelate(III)

In the title salt, (C(13)H(10)N(3)O(2))[Ni(C(3)S(5))(2)], the Ni(III) cation is S,S′-chelated by two 2-thioxo-1,3-dithiole-4,5-dithiol­ate anions in a distorted square-planar geometry. The complex anion is approximately planar with a maximum deviation of 0.097 (1) Å. In the 1-(4-nitro­benz­yl)-4-cyano­pyridinium cation, the pyridine ring is twisted at a dihedral angle of 73.84 (16)° with respect to the benzene ring. π-π stacking is observed between nearly parallel [dihedral angle = 4.71 (7)°] dithiole and benzene rings, the centroid–centroid distance being 3.791 (2) Å.