trans-Chloridobis(ethane-1,2-diamine-κ2N,N′)(thiocyanato-κN)cobalt(III) diamminetetrakis(thiocyanato-κN)cromate(III)

The title ionic complex [CoCl(NCS)(C2H8N2)2][Cr(NCS)4(NH3)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(NH3)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