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Acta Cryst. (2013). E69, o1145-o1146  [ doi:10.1107/S1600536813016759 ]

Bis[1-(2,3-dimethylphenyl)piperazine-1,4-diium] bis(oxonium) cyclohexaphosphate dihydrate

I. Ameur, S. Abid, S. S. Al-Deyab and M. Rzaigui

Abstract: In the title compound, 2C12H20N22+·2H3O+·P6O186-·2H2O, a protonated water molecule bridges the centrosymmetrical anionic P6O18 ring via O-H...O 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 [100]. The 1-(2,3-dimethylphenyl)piperazine-1,4-diium cations are located between the layers, compensating their negative charge and establishing N-H...O hydrogen bonds with the O atoms of the anionic framework.

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