4-Aza-1-azoniabicyclo[2.2.2]octane 2,4-dinitro­benzoate

In the title compound, C6H13N2+·C7H3N2O6−, the 1-azonia-4-azabicyclo[2.2.2]octane cation acts as a donor in inter­molecular N—H⋯O hydrogen bonds. Beside the electrostatic inter­actions, the crystal structure is also stabilized by C—H⋯O hydrogen bonds to give a three-dimensional mol­ecular network.