2-Amino-6-methylpyridinium 2,2,2-trichloroacetate

Abstract

In the asymmetric unit of the title molecular salt, C6H9N2+·C2Cl3O2−, there are two independent 2-amino-6-methylpyridinium cations and two independent trichloroacetate anions. The pyridine N atom of the 2-amino-6-methylpyridine molecule is protonated and the geometries of these cations reveal amine–imine tautomerism. Both protonated 2-amino-6-methylpyridinium cations are essentially planar [maximum deviations = 0.026 (2) and 0.012 (2) Å]. In the crystal, the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxylate O atoms of the anionviaa pair of N—H...O hydrogen bonds, forming anR22(8) ring motif. These motifs are connectedviaN—H...O and C—H...O hydrogen bonds to form slabs parallel to (101).