Received 11 July 2013
In the title compound, C16H10O8·H2O, the dihedral angle between the benzene rings is 71.59 (8)°. The COOH groups make dihedral angles of 10.3 (2), 30.8 (2), 11.3 (2) and 42.3 (2)° with their attached rings. In the crystal, O-HO hydrogen bonds link the components forming a three-dimensional supramolecular network.
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; 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: LH5634 ).
The authors are grateful to the Natural Science Foundation of Hubei Province of China (grant No. 2010CDB10707) and the Project of Hubei Provincial Education Office (grant No. Q20101203).
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