Crystal structure of N,N′-[(ethane-1,2-di­yl)bis­(aza­nediylcarbono­thio­yl)]bis­(benzamide)

The reaction of benzoyl chloride and ethyl­endi­amine in the presence of potassium thio­cyanate yielded a white solid, C(18)H(18)N(4)O(2)S(2), which consists of two benzoyl­thio­ureido moieties connected by an ethyl­ene chain. The asymmetric unit consists of one half of the mol­ecule, the complete mol­ecule being generated by crystallographic inversion symmetry. Both thio­urea moieties are in a trans conformation. An intra­molecular N—H⋯O hydrogen bond occurs. In the crystal, C—H⋯S and C—H⋯O hydrogen bonds link the molecules, forming layers parallel to the ac plane.