Synthesis, crystal structure and thermal properties of bis­(1,3-di­cyclo­hexyl­thio­urea-κS)bis(iso­thiocyanato-κN)cobalt(II)

Crystals of the title compound, [Co(NCS)(2)(C(13)H(24)N(2)S)(2)], were obtained by the reaction of Co(NCS)(2) with 1,3-di­cyclo­hexyl­thio­urea in ethanol. Its crystal structure consists of discrete complexes that are located on twofold rotation axes, in which the Co(II) cations are tetra­hedrally coordinated by two terminal N-bonded thio­cyanate anions and two 1,3-di­cyclo­hexyl­thio­urea ligands. These complexes are linked via inter­molecular N—H⋯S and C—H⋯S hydrogen bonding into chains, which elongate in the b-axis direction. These chains are closely packed in a pseudo-hexa­gonal manner. The CN stretching vibration of the thio­cyanate anions located at 2038 cm(−1) is in agreement with only terminal bonded anionic ligands linked to metal cations in a tetra­hedral coordination. TG–DTA measurements prove the decomposition of the compound at about 227°C. DSC measurements reveal a small endothermic signal before decomposition at about 174°C, which might correspond to melting.