Anilinium-3-carboxylate 3-carboxyanilinium nitrate

Abstract

The title compound, C7H8NO2+·NO3−·C7H7NO2, exists in the form of a protonated dimer of two anilinium-3-carboxylate molecules related by an inversion center, and a nitrate anion located on a twofold rotation axis. The bridging H atom occupies, with equal probability, the two sites associated with the carboxyl atoms. In addition to the strong O—H...O hydrogen bond, in the crystal, the various units are linked via N—H...O and C—H...O hydrogen bonds forming a three-dimensional structure.