4-Di­methyl­amino­pyridinium bromide

The crystal and molecular structure of 4-di­methyl­amino­pyridinium bromide, C₇H₁₁N₂^+.Br⁻, (I), is built up by hydrogen-bonded dimers of crystallographic 222 symmetry and four short C—H...halogen contacts. It is remarkable that (I) and 4-di­methyl­amino­pyridinium chloride are not isostructural.