Dicyanidobis(N,N'-dimethythio-urea-κS)mercury(II).

In the title complex, [Hg(CN)(2)(C(3)H(8)N(2)S)(2)], the Hg(II) atom is located on a twofold rotation axis. It is four-coordinate having an irregular tetra-hedral geometry composed of two cyanide C atoms [Hg-C = 2.090 (6) Å] and two thione S atoms of N,N'-dimethyl-thio-urea (dmtu) [Hg-S = 2.

Dicyanidobis(thio-urea-κS)cadmium(II) monohydrate.

In the title compound, [Cd(CN)(2)(CH(4)N(2)S)(2)]·H(2)O, the Cd atom lies on a twofold rotation axis and is bonded to two S atoms of thio-urea and two C atoms of the cyanide anions in a distorted tetra-hedral environment. The crystal structure is stabilized by N-H⋯N(CN), N-H⋯O, O-H⋯N and N-H⋯S hydrogen bonds.