Acta Cryst. (2009). E65, o1004 [ doi:10.1107/S1600536809012513 ]
Abstract: The title compound, C4H12N22+·2C2H2NO3-, contains a network of doubly protanated piperazinium cations (lying about centres of inversion) and dioxamate anions. The piperazinium dication adopts a typical chair conformation. The crystal structure is stabilized by cation-to-anion N-HO and anion-to-anion N-HO hydrogen bonds.
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