The title compound, C6H2N3O7−·C10H13Cl2N2+, crystallizes with one 1-(2,3-dichloro-phenyl)piperazine (DP) cation and one picrate (PA) anion in the asymmetric unit. In the crystal structure, the DP cation and PA anion are interconnected via several N—H...O and C—H...O hydrogen bonds. The DP cation and PA anion are further connected through C—Cl...π [3.8201 (4), 3.7785 (4) Å] and N—O...π [3.7814 (4) Å] interactions. The DP cations are further interconnected via a weak intermolecular Cl...Cl [3.2613 (4) Å] halogen–halogen interaction. The combination of these supramolecular interactions leads to a herringbone like supramolecular architecture.
