3-Aminopyridin-1-ium 3-carboxybenzoate

Abstract

In the title organic salt, C5H7N2+·C8H5O4-, the carb-oxy-lic group is nearly coplanar with the benzene ring [dihedral angle 1.9 (4)°] whereas the carboxylate group is twisted relative to the benzene ring by 13.6 (4)°. In the crystal, N-H⋯O and O - H⋯O hydrogen bonds connect the components into a three-dimensional framework consisting of stacks of alternating pairs of anions and cations exhibiting π-π stacking inter-actions with centroid-centroid distances in the range 3.676 (2)-3.711 (1) Å. The π-π stacks extend along [110] and [-110]. © Campos-Gaxiola et al. 2012.