Date Published: June 01, 2012
Publisher: International Union of Crystallography
Author(s): Fadila Berrah, Sofiane Bouacida, Hayet Anana, Thierry Roisnel.
The asymmetric unit includes two crystallographically independent equivalents of the title salt, C6H7N2O2+·ClO4−. The cations and anions form separate layers alternating along the c axis, which are linked by N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds into a two-dimensional network parallel to (100). Further C—H⋯O contacts connect these layers, forming a three-dimensional network, in which R44(20) rings and C22(11) infinite chains can be identified.
For structural studies of hybrid compounds of 2-aminonicotinic acid, see: Akriche & Rzaigui (2007 ▶); Berrah et al. (2011a ▶,b ▶). For related perchlorate compounds, see: Toumi Akriche et al. (2010 ▶); Bendjeddou et al. (2003 ▶). For hydrogen-bond motifs, see: Etter et al. (1990 ▶); Grell et al. (1999 ▶).