2-Amino-4-methylpyridinium 4-hydroxybenzoate

Abstract

In the title molecular salt, C 6 H 9 N 2 + ·C 7 H 5 O 3 − , the cation is protonated at the pyridine N atom and the anion is deprotonated. The pyridine ring is inclined at an angle of 24.96 (11)° to the benzene ring. In the crystal, adjacent anions and cations are linked by a pair of N—H...O hydrogen bonds, generating an R 2 2 (8) ring motif; these motifs are further connected by another N—H...O and O—H...O hydrogen bonds into a three-dimensional network. The crystal structure also features weak C—H...O interactions.