Acta Cryst. (2005). C61, o211-o212 [doi:10.1107/S0108270105004257]
Abstract: The title five-membered heterocycle, C4H4Cl2OS, adopts an envelope conformation with the S atom at the tip of the flap. All three ring substituents, viz. the sulfoxide O atom and the two Cl atoms, are cis to each other. The two C atoms ![[alpha]](/logos/entities/alpha_rmgif.gif)
to the sulfoxide group are also bonded to chlorine. The electron-withdrawing chlorine substituents give rise to weak C-H
O hydrogen bonds with the sulfoxide O atom of a symmetry-related molecule [HO = 2.44 (2) and 2.61 (2) Å, CO = 3.143 (3) and 3.302 (2) Å and C-HO = 129.9 (19) and 135.1 (19)°]. There is also a possible weak C-HCl interaction. Chains of molecules held together by these weak interactions run parallel to the a axis.
Formula: C4H4Cl2OS
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