Diiodobis(1-methyl-1,3-imidazolium-2-thiolato-S)mercury(II)

The reaction of 1-methyl-1,3-imidazole-2-thione (meimtH) with mercury(II) i odide in methanol in a 2:1 molar ratio resulted in the formation of single crystals of the title compound, [HgI2 (C4H6N2S)(2)]. The Hg atom is coordin ated by two I [2.7809 (9) and 2.7999 (8) Angstrom] and two thione S atoms [ 2.520 (3) and 2.576 (3) Angstrom] with irregular tetrahedral coordination g eometry. The NH groups of the imidazole ring take part in intra- and interm olecular hydrogen bonds with I atoms [N ... I 3.596 (8) and 3.611 (9) Angst rom, respectively] joining molecules into infinite chains parallel to the z axis.