Received 31 October 2012
The title compound, [Hg2(C11H16O2PS2)4], is a dinuclear complex with a distorted tetrahedral geometry around each HgII atom. Although the two HgII atoms are surrounded by the same ligand, two different coordination modes are observed: one is chelating and the other bridging. The Hg-S bonds form two distinct pairs of long and short bonds. One pair includes both chelating and bridging Hg-S bonds with approximately equal bond lengths of 2.4042 (8) and 2.3997 (7) Å, respectively. The other pair is significantly longer at 2.9361 (9) and 2.8105 (8) Å, respectively. This pattern forms a center of inversion through the molecule with an equal and opposite effect occurring at the other HgII atom. The S-Hg-S angles vary widely from 76.26 (2) to 154.65 (3)°, indicative of a distorted tetrahedral arrangement of the S atoms around the HgII atom. The P-S bond lengths are 1.9681 (10) and 2.0519 (11)°, clearly indicating partial double-bond character in the former. The molecule contains an inversion center situated between the two HgII atoms.
For information on dithiophosphonate compounds, see: Van Zyl & Fackler (2000); Van Zyl (2010). For examples of mercury(II) dithiophosphonate complexes, see: Gray et al. (2004a,b); Devillanova et al. (2006).
Data collection: APEX2 (Bruker, 2006); cell refinement: SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FF2088 ).
The authors thank the National Research Foundation (NRF) and UKZN for financial support.
Bruker (2006). APEX2 and SAINT. Bruker AXS Inc., Madison, WI, USA.
Devillanova, F., Aragoni, C., Arca, M., Hursthouse, M. B. & Huth, S. L. (2006). Univ. Southampt. Cryst. Struct. Rep. Arch. pp. 250-255.
Gray, I. P., Slawin, A. M. Z. & Woollins, J. D. (2004a). Dalton Trans. pp. 2477-2486.
Gray, I. P., Slawin, A. M. Z. & Woollins, J. D. (2004b). Z. Anorg. Allg. Chem. 630, 1851-1857.
Sheldrick, G. M. (1997). SADABS, University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Van Zyl, W. E. (2010). Comments Inorg. Chem. 31, 13-45.
Van Zyl, W. E. & Fackler, J. P. (2000). Phosphorus Sulfur Silicon Relat. Elem. 167, 117-132.