2-Amino-5-bromopyridinium 2-phenoxyacetate

Abstract

The phenoxyacetate anion of the title salt, C5H6BrN2+·C8H7O3−, is essentially planar, with a dihedral angle of 7.6 (5)° between the carboxylate group and the benzene ring. In the crystal, the cation and the anion are linkedviaN—H...O hydrogen bonds, forming a helical chain along a 21screw axis. In the chain, a π–π stacking interaction between the pyridinium and benzene rings, with a centroid–centroid distance of 3.854 (2) Å, and a C—H...O interaction are observed. The chains are further linked through another C—H...O hydrogen bond, forming a three-dimensional network.