Acta Cryst. (2007). E63, o4101  [ doi:10.1107/S1600536807045205 ]

Tetraammonium benzene-1,2,4,5-tetracarboxylate dihydrate

G. Dutkiewicz, T. Borowiak, M. Pietraszkiewicz and O. Pietraszkiewicz

Abstract: In the crystal structure of 4NH₄⁺·C₁₀H₂O₈^4-·2H₂O, the tetracarboxylate anion resides on a twofold crystallographic axis. The supramolecular structure arises from eight N-HO [NO ranges from 2.783 (2) to 3.003 (2) Å] and two O-HO [OO distances of 2.7313 (18) and 2.9102 (18) Å] hydrogen bonds.

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