Research Article: 3,5-Dicarb­oxy-2,6-dimethyl­pyridinium chloride dihydrate

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).

Partial Text

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 ▶).




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