Bis[1-(4-cyano­benz­yl)pyrazinium] bis­(1,2-dicyano­ethene-1,2-dithiol­ato)nickelate(II)

The asymmetric unit of the title complex, (C(12)H(10)N(3))(2)[Ni(C(4)N(2)S(2))(2)], consists of one 1-(4-cyano­benz­yl)pyrazinium cation and one half of an [Ni(mnt)(2)](2−) dianion (mnt(2−) is 1,2-dicyano­ethene-1,2-dithiol­ate). The Ni(2+) ion is located on an inversion center and is coordinated by four S atoms from two mnt(2−) ligands, exhibiting a square-planar coordination geometry. The cation adopts a conformation where both the pyrazine ring and the benzene ring are twisted with respect to the C—C—N reference plane by 16.5 (2) and 69.8 (1)°, respectively.