1-Methyl-5-nitro­imidazolium chloride

The title salt, C4H6N3O2+·Cl−, exhibits multiple hydrogen-bonding inter­actions involving the nitro­imidazolium cation and the chloride anion. Strong hydrogen bonds between the amine hydrogen atom and the chloride anion link the ionic moieties. Of note, with respect to H⋯Cl inter­actions, the central aromatic hydrogen atom displays a shorter inter­action than the other aromatic hydrogen atom. Finally, inter­actions are observed between the nitro moiety and methyl H atoms. While no π–π stacking is observed, anion-π inter­actions are present. The crystal was refined as a two-component twin.Unlabelled Image