Crystal structure of 6-ethoxypyridin-1-ium-2-olate

Abstract

In the title compound, C7H9NO2, all non-H atoms are essentially coplanar [r.m.s. deviation = 0.032 Å]. The largest deviation from the plane of the pyridine ring is 0.105 (6) Å for the terminal C atom of the ethoxy group. In the crystal, molecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers. These dimers are further linked by C—H...π interactions and weak π–π interactions between pyridine rings [centroid–centroid distance = 4.023 (1) Å].