Dichloridobis(N,N′-diethyl­thio­urea-κS)mercury(II)

There are two mol­ecules in the asymmetric unit of the title compound, [HgCl(2)(C(5)H(12)N(2)S)(2)]. In both mol­ecules, the N,N′-diethyl­thio­urea ligands exhibit a cis,trans geometry around their C—N amide bonds. The shapes of the mol­ecules are, to a large extent, determined by intra­molecular N—H⋯Cl hydrogen bonds formed by the N—H groups from the cis amide groups. In one mol­ecule, these groups are involved in three-center hydrogen bonds involving both chloride ligands, whereas in the other mol­ecule only one Cl ligand takes part in intra­molecular hydrogen bonding. The coordination around the Hg atom is distorted tetra­hedral with an S(2)Cl(2) donor set. Inter­molecular hydrogen bonds between N—H groups from the trans amide units of the thio­amide ligands and the chloride ligands connect the mol­ecules into a polymeric chain extending along the c axis. One of the ethyl groups of the N,N′-diethyl­thio­urea ligands is disordered over two positions in one of the mol­ecules, with an occupancy of 0.654 (17) for the major component.