3,4-Dihydroxybenzoic acid pyridine monosolvate

Abstract

The asymmetric unit of the title compound, C7H6O4·C5H5N, consists of one 3,4-dihydroxybenzoic acid and one pyridine molecule, both located on general positions. The 3,4-dihydroxybenzoic acid molecules are arranged in layers and are connected by intermolecular O—H...O hydrogen bonding, forming channels along the a axis in which the pyridine molecules are located. The pyridine and the acid molecules are additionally linked by strong O—H...N hydrogen bonding and by weak π–π stacking interactions with centroid–centroid distances between the pyridine rings of 3.727 (2) Å.