2-Amino-6-methylpyridinium 2-carboxybenzoate

Abstract

In the title mol­ecular salt, C6H9N2 +·C8H5O4 −, an intra­molecular O—H⋯O hydrogen bond occurs within the anion, thereby generating an S(7) ring, which may correlate with the fact that both the carb­oxy­lic acid and carboxyl­ate groups are almost coplanar with their attached rings [dihedral angles = 2.9 (3) and 5.2 (3)°, respectively]. In the crystal, each cation is linked to its adjacent anion by two N—H⋯O hydrogen bonds; the dihedral angle between the pyridine and benzene rings is 2.22 (10)°. The ion pairs are linked by further N—H⋯O inter­actions.