Acta Cryst. (2013). E69, o910 [ doi:10.1107/S1600536813012919 ]
Abstract: In the title molecular salt, C6H9N2+·C7H4NO4-, the original pyridine N atom of 2-amino-4-methylpyridine is protonated and the carboxylic acid group of nitrobenzoic acid is deprotonated. In the crystal, the ions are linked by N-HO hydrogen bonds, forming chains propagating along . The chains are linked via C-HO hydrogen bonds, forming two-dimensional networks lying parallel to the bc plane.
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