1:2 Complexes of chloranilic acid with pyrazole and imidazole, and the aceto­nitrile solvate of a 1:1 complex with imidazole

2,5-Di­chloro-3,6-di­hydroxy-1,4-benzo­quinone (chloranilic acid) forms X—H⃛Y (X, Y = N or O) and C—H⃛Cl hydrogen bonds with pyrazole and imidazole to afford bis­(pyrazolium) di­chloro­anilate and bis­(imidazolium) di­chloro­anilate, (I) and (II), both 2C₃H₅N₂⁺·C₆Cl₂O₄²⁻, and imidazolium chloro­anilate aceto­nitrile solvate, C₃H₅N₂⁺·­C₆HCl₂O₄⁻·C₂H₃N, (III). Their crystal structures demonstrate three novel supramolecular architectures based on supramolecular synthons to build a ladder, (I), a two-dimensional network, (II), and a flat ribbon, (III).