Two-dimensional polymeric [Hg₄(μ₂-I)₆I₂(μ₂-C₄S₆)]_n

Abstract

Key indicators: single-crystal X-ray study; T = 173 K; mean (C-C) = 0.014 Å; R factor = 0.039; wR factor = 0.114; data-to-parameter ratio = 25.4.The title compound, poly [( 2 -2H,5H-1,3-dithiolo[4,5-[Hg 4 I 8 (C 4 S 6 )] n , represents the first example of a coordination polymer assembled by the , -C 4 S 6 dithione ligand. The Hg II ions are four-coordinated in a distorted tetrahedral geometry, the coordination demand being satisfied either by four bridging iodide ligands or by three iodide ligands (one terminal and two bridging) and a thiocarbonyl S atom. Due to the bridging nature of the dithione ligand, the coordination polymer has a two-dimensional structure, built up of undulated layers parallel to (001). There is an inversion center at the mid-point of the central C C double bond. Related literature