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Piperazine-1,4-diium bis(2-carboxy-1H-pyrazole-4-carboxylate) tetrahydrate

Acta Crystallographica Section E

Structure Reports Online

Volume 66, Part 10 (October 2010)

organic compounds


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Acta Cryst. (2010). E66, o2578    [ doi:10.1107/S160053681003655X ]

Piperazine-1,4-diium bis(2-carboxy-1H-pyrazole-4-carboxylate) tetrahydrate

X.-H. Zhou

Abstract: The asymmetric unit of the title compound, C4H12N22+·2C5H3N2O4-·4H2O, comprises one-half of a piperazine-1,4-diium cation, which lies on an inversion centre, a 2-carboxy-1H-pyrazole-4-carboxylate anion and two water molecules. An extensive network of intermolecular O-H...O, N-H...O, N-H...N and C-H...O hydrogen bonds between the cations, anions and water molecules leads to a three-dimensional supramolecular framework.

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