Crystal structure of 3-methyl­pyridinium picrate: a triclinic polymorph

The title mol­ecular salt, C(6)H(8)N(+)·C(6)H(2)N(3)O(7) (−) (systematic name: 3-methyl­pyridinium 2,4,6-tri­nitro­phenolate), crystallizes in the triclinic space group P-1. The crystal structure of the monoclinic polymorph (space group P2(1)/n) has been reported [Stilinovic & Kaitner (2011 ▸). Cryst. Growth Des. 11, 4110–4119]. In the crystal, the anion and cation are linked via bifurcated N—H⋯(O,O) hydrogen bonds, enclosing an R (1) (2)(6) graph-set motif. These units are linked via C—H⋯O hydrogen bonds, forming a three-dimensional framework. Within the framework there are π–π inter­actions present, involving inversion-related picrate anions and inversion-related pyridinium cations, with inter-centroid distances of 3.7389 (14) and 3.560 (2) Å, respectively.