2,4,5-Tris(4-methyl-phen-yl)-1H-imidazol-3-ium 2,4,6-tri-nitro-phenolate.

The title mol-ecular salt, C24H23N2 +.C6H2N3O7, consists of a 2,4,5-tris-(4-methyl-phen-yl)-1H-imidazol-3-ium cation and a 2,4,6-tri-nitro-phenolate anion. The compound crystallizes in the monoclinic space group P21/c. In the crystal, the cation and anion are linked by N-H⋯O hydrogen bonds. One imidazolium N-H group forms a hydrogen bond to the phenolate oxygen atom of the picrate anion, while the second N-H group forms an inter-molecular hydrogen bond to a disordered nitro oxygen atom of a symmetry-related picrate anion. The crystal packing is further consolidated by several offset π-π stacking contacts between neighbouring aromatic rings, with centroid-centroid separations in the range 3.560 (2)-3.872 (2) Å. The oxygen atoms of the nitro groups of the picrate anion are disordered over two sets of positions and were refined with split occupancies using suitable geometric and displacement-parameter restraints.