trans-Chloridobis­(ethane-1,2-di­amine-κ(2) N,N′)(thio­cyanato-κN)cobalt(III) diammine­tetra­kis­(thio­cyanato-κN)cromate(III)

The title ionic complex [CoCl(NCS)(C(2)H(8)N(2))(2)][Cr(NCS)(4)(NH(3))(2)], which crystallizes as a non-merohedral twin, is build up of a complex cation [CoCl(NCS)(en)(2)](+) (en is ethane-1,2-di­amine) and the Reinecke’s salt anion [Cr(NCS)(4)(NH(3))(2)](−) as complex counter-ion. A network of N—H⋯S and N—H⋯Cl hydrogen bonds, as well as short S⋯S contacts [3.538 (2) and 3.489 (3) Å], between the NCS groups of the complex anions link the mol­ecules into a three-dimentional supra­molecular network. Intensity statistic indicated twinning by non-mero­hedry with refined weighs of twin components are 0.5662:0.4338.