Date Published: February 01, 2012
Publisher: International Union of Crystallography
Author(s): Madhukar Hemamalini, Jia Hao Goh, Hoong-Kun Fun.
The complete anion of the title hydrated molecular salt, 2C5H8N3+·C8H4O4−·2H2O, is generated by a crystallographic twofold axis. In the crystal, the cations, anions and water molecules are connected by N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional network. The crystal structure also features C—H⋯π interactions.
For background to hydrogen-bonding patterns of 2-aminopyridine derivatives, see: Gellert & Hsu (1988 ▶); Banerjee & Murugavel (2004 ▶). For related structures, see: Hemamalini & Fun (2010a ▶,b ▶,c ▶). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986 ▶).