Abstract
In the title compound, [Hg(CN)(2)(C(9)H(20)N(2)S)(2)], the Hg atom lies on a twofold rotation axis. There is only half a mol-ecule in the asymmetric unit. The Hg atom has a distorted tetra-hedral coordination involving the S atoms of two 1-butyl-3-propyl-thio-urea groups and the C atoms of the two CN(-) anions. In the crystal packing, adjacent mol-ecules are connected by inter-molecular N-H⋯N and N-H⋯S hydrogen bonds, forming infinite chains in three dimensions.