Date Published: June 01, 2010
Publisher: International Union of Crystallography
Author(s): Ji-Yuan Yao.
In the title compound, C9H10NO4+·Cl−·2H2O, both the cation and the anion have crystallographic twofold rotation symmetry; in the former, one N and one C atom lie on the rotation axis. In the crystal structure, the ions and water molecules are linked via O—H⋯O, O—H⋯Cl and N—H⋯Cl hydrogen bonds into layers parallel to (101).
For the structure of a related 3,5-dicarboxy-2,6-dimethylpyridinium salt, see: Rowan & Holt (1997 ▶). For the ferroelectric properties of supramolecular compounds, see: Ye et al. (2008 ▶); Hang et al. (2009 ▶). For a description of the Cambridge Structural Database, see: Allen et al. (2002 ▶).