Acta Cryst. (2013). E69, o1145-o1146 [ doi:10.1107/S1600536813016759 ]
Abstract: In the title compound, 2C12H20N22+·2H3O+·P6O186-·2H2O, a protonated water molecule bridges the centrosymmetrical anionic P6O18 ring via O-HO hydrogen bonds. The centrosymmetric hydrogen-bonded rings formed by four oxonium cations and four phosphate anions can be described by an R48(36) graph-set motif. The ring motifs are connected by hydrogen bonds into inorganic layers perpendicular to . The 1-(2,3-dimethylphenyl)piperazine-1,4-diium cations are located between the layers, compensating their negative charge and establishing N-HO hydrogen bonds with the O atoms of the anionic framework.
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