Acta Cryst. (2011). E67, m914  [ doi:10.1107/S1600536811021891 ]

Potassium N,2-dichlorobenzenesulfonamidate sesquihydrate

B. T. Gowda, S. Foro and K. Shakuntala

Abstract: In the title compound, K⁺·C₆H₄Cl₂NO₂S^-·1.5H₂O, one water molecule has crystallographically imposed twofold symmetry. The K⁺ ion is heptacoordinated by three O atoms from water molecules and by four sulfonyl O atoms of N-chloro-2-chloro-benzenesulfonamide anions. The S-N distance of 1.582 (2) Å is consistent with an S-N double bond. In the structure, the sulfonyl-O and the water-O atoms bridge the K⁺ cations in a bidentate fashion. The crystal structure comprises sheets in the ac plane which are further stabilized by intermolecular O-HCl and O-HN hydrogen bonds.

Online 11 June 2011

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