6-Methylnicotinic acid

Abstract

All non-H atoms of the title compound, C7H7NO2, are nearly coplaner, the r.m.s. deviation being 0.0087 Å. In the crystal, the partially overlapped arrangement and the face-to-face distance of 3.466 (17) Å between parallel pyridine rings of neighboring molecules indicates the existence of π–π stacking. Intermolecular O—H...N hydrogen bonding and weak C—H...O hydrogen bonding are present in the crystal structure.