2-Hydroxymethyl-1,3-dimethyl-1H-benzimidazol-3-ium iodide

2-Hydroxymethyl-1,3-dimethyl-1H-benzimidazol-3-ium iodide

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In the cation of the title compound, C10H13N2O+·I−, all non-H atoms, with the exception of the O atom, are essentially coplanar, with a maximum deviation of 0.04 (1) Å.In the crystal, the cations and anions are arranged in layers parallel to (100).The cations are connected lovesense 3 to the anions via an O—H.

I hydrogen bond and there are significant π–π stacking interactions between cation layers, with centroid–centroid distances in the range 3.606 (5)–3.630 (5) Å.A weak intramolecular C—H.

O hydrogen here bond is also observed.The crystal studied was an inversion twin with refined components of 0.52 (5) and 0.48 (5).