title: 3-Amino-pyridin-1-ium 3-carb-oxy-benzo-ate.
abstract: In the title organic salt, C(5)H(7)N(2) (+)·C(8)H(5)O(4) (-), the carb-oxy-lic group is nearly coplanar with the benzene ring [dihedral angle 1.9 (4)°] whereas the carboxyl-ate 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].
authors.forename: Jose J
authors.initials: JJ
authors.lastname: Campos-Gaxiola
authors.forename: Simón
authors.initials: S
authors.lastname: Hernández-Ortega
authors.forename: David
authors.initials: D
authors.lastname: Morales-Morales
authors.forename: Adriana
authors.initials: A
authors.lastname: Cruz Enríquez