Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Qun Zhao.
In the title molecular salt, C6H8NO+·C7H3N2O6−, which crystallizes in the chiral monoclinic space group P21, the achiral components assemble by three different N—H⋯O, one O—H⋯O and one C—H⋯O hydrogen bonds into two-stranded chains running parallel to . The dihedral angles between the carboxy group and the two nitro groups and the mean plane of their attached benzene ring are 24.5 (9), 6.1 (6) and 13.0 (1)°, respectively..
For background to supramolecular structures and hydrogen bonding, see: Burrows (2004 ▶); Desiraju (2002 ▶); Steiner (2002 ▶). For related structures, see: Wang et al. (2008 ▶).