3,4-Dihy­droxy­benzoic acid pyridine monosolvate

The asymmetric unit of the title compound, C(7)H(6)O(4)·C(5)H(5)N, 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.