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Acta Cryst. (2014). C70, 315-319  [ doi:10.1107/S2053229614002459 ]

Hydrogen-bonded two- and three-dimensional polymeric structures in the ammonium salts of 3,5-di­nitro­benzoic acid, 4-nitro­benzoic acid and 2,4-di­chloro­benzoic acid

G. Smith

Synopsis: The hydrogen-bonded two- and three-dimensional polymeric structures in the ammonium salts of 3,5-di­nitro­benzoic acid, 4-nitro­benzoic acid and 2,4-di­chloro­benzoic acid involve cation-anion N-H...O hydrogen-bonded cyclic associations. The presence or absence of the ring-stacking and ring-laddering models for ammonium carboxyl­ate structures is also tested particularly with respect to the hydrated examples.

Formula: NH4+ salts of C7H3N2O6-, C7H4NO4-·2H2O and C7H3Cl2O2-·0.5H2O


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