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

Abstract

In the asymmetric unit of the title molecular salt, C6H 9N2+·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 anion via a pair of N-H..O hydrogen bonds, forming an R 2 2(8) ring motif. These motifs are connected via N-H..O and C-H..O hydrogen bonds to form slabs parallel to (101).