Acta Cryst. (2012). E68, m1400-m1401
[ doi:10.1107/S1600536812043073 ]

catena-Poly[[chlorido[1-(3-nitrophenyl)-2-(triphenylphosphoranylidene)ethanone-C²]mercury(II)]--chlorido]

A. Dadrass, J. Khalafy, H. Rahchamani, H. Nasri Koureh and H. Yaghoobnejad Asl

Abstract: In the title organometallic polymer, [HgCl₂(C₂₆H₂₀NO₃P)]_n, the monodentate 1-(3-nitrophenyl)-2-(triphenylphosphoranylidene)ethanone ligand is coordinated to the Hg^II atom through the methine C atom. The Hg^II atom is four-coordinated in a distorted tetrahedral geometry by one terminal Cl atom, two bridging Cl atoms, and one C atom from the ylidic ligand, resulting in a polymeric chain parallel to [010]. The terminal Cl atom is more strongly bound to the Hg^II ion [2.3916 (9) Å] than the bridging Cl atoms. The bridge is asymmetric, as indicated by the two different Hg-Cl(bridging) bond lengths [2.5840 (8) and 2.7876 (8) Å]. Intramolecular C-HO and weak C-HCl contacts stabilize the polymeric chain. In the crystal, adjacent chains interact via C-HO hydrogen bonds.

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