1,4,10,13-Tetra­oxa-7,16-diazo­nia­cyclo­octa­decane bis­(1H-pyrrole-2-carboxyl­ate)

In the title salt, C₁₂H₂₈N₂O₄²⁺·2C₅H₄NO₂⁻, the 1,4,10,13-tetra­oxa-7,16-di­aza­cyclo­octa­decane dication possesses inversion symmetry. In the crystal, the pyrrole-carboxyl­ate anions are linked via pairs of N—H...O hydrogen bonds, forming inversion dimers. These dimers are linked by the dications, via N—H...O hydrogen bonds, forming chains propagating along [110].