Received 4 January 2011
In the title compound, C7H8NO4+·Cl-·2H2O, the organic molecule is almost planar with an r.m.s. deviation of 0.0164 Å for all non-H atoms. An S(6) ring motif is formed due to an intramolecular O-HO hydrogen bond. In the crystal, the molecules are linked into a three-dimensional network by N-HCl, N-HO, O-HCl and O-HO hydrogen bonds.
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: DN2650 ).
The authors acknowledge the provision of funds for the purchase of the diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha. Pakistan.
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