Dicyanidobis(N,N′-dimethythio­urea-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 tetra­hedral geometry composed of two cyanide C atoms [Hg—C = 2.090 (6) Å] and two thione S atoms of N,N′-dimethyl­thio­urea (dmtu) [Hg—S = 2.7114 (9) Å]. The NC—Hg—CN bond angle of 148.83 (13)° has the greatest deviation from the ideal tetra­hedral geometry. The mol­ecular structure is stabilized by intra­molecular N—H⋯S inter­actions involving dmtu units related by the twofold symmetry. In the crystal, inter­molecular N—H⋯N(CN) hydrogen-bonding inter­actions link symmetry-related mol­ecules into a two-dimensional network in (110).