4-Dimethylaminopyridinium-4-nitro-phenolate-4-nitrophenol (1/1/1)

Within and between molecules of the title compound, C7H11N2+.C6H5NO3-.C6H4NO3, there are C - H...O, C-H...N, O - H...O and N - H...O interactions, which generate rings of graph-set motifs S(5), R-2(1)(5), R-2(1)(6), R-2(1)(7) and R-1(2)(4). The supramolecular aggregation is completed by the presence of three different pi-pi interactions and short van der Waals contacts.