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

Abstract

In the cation of the title compound, C10H13N 2O+·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 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 bond is also observed. The crystal studied was an inversion twin with refined components of 0.52 (5) and 0.48 (5). © 2013 Said et al.