1-(Prop-2-en-1-yl)-3-[(trimethylsilyl)methyl]benzimidazolium bromide monohydrate

In the title compound, C14H21N2Si+·Br−·H2O, the benzimidazole ring system is almost planar [maximum deviation = 0.021 (2) Å]. In the crystal, O—H⋯Br and C—H⋯O hydrogen bonds link the ions via the O atoms of the water molecules. In addition, there are π–π stacking interactions between the centroids of the benzene and imidazole rings of the benzimidazole ring system [centroid–centroid distances = 3.521 (3) and 3.575 (2) Å].

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