Date Published: April 01, 2012
Publisher: International Union of Crystallography
Author(s): Chunman Jia, Shangwen Chen, Wenbing Yuan.
In the title compound, C10H11NO4·H2O, the carboxyl group is twisted at a dihedral angle of 6.1 (3)° with respect to the benzene ring. In the crystal, the organic molecules are linked by pairs of O—H⋯O hydrogen bonds involving both carboxyl groups, forming zigzag chains propagating along the b-axis direction. The water molecules form  chains linked by O—H⋯O hydrogen bonds. The organic molecule and water chains are cross-linked by N—H⋯Owater and Owater—H⋯O hydrogen bonds, generating (001) sheets.
For synthetic background, see: Kurd & Hayao (1952 ▶); Yong et al. (2004 ▶).