Received 1 September 2008
In the crystal structure of the title compound, C9H7N2O2S+·C7H5O6S-·2H2O, an H atom from the 5-sulfosalicylic acid is transferred to the pyridyl N atom, forming a salt. The dihedral angle between the thiazole and pyridinium rings is 5.909 (5)°. The crystal packing is determined by O-HO and N-HO hydrogen bonds involving water molecules.
Data collection: APEX2 (Bruker, 2004); cell refinement: APEX2; data reduction: SAINT (Bruker, 2004); 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: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: KP2193 ).
This work was supported by the National Natural Science Foundation of China (No. 20471026) and the Natural Science Foundation of Henan Province (No. 0311021200).
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