Abstract
The title compound, 0.75C(15)H(14)N(2)O center dot 0.25C(15)H(14)N(2)O, is a cocrystal of 2-methyl-6-(6-methyl-1H-benzimidazol-2-yl)phenol as the major component and 2-methyl-6-(5-methyl-1H-benzimidazol-2-yl)phenol as the minor component. The refined site-occupancy ratio is 0.746 (4)/0.254 (4). The conformations of both components are identical except for that of the methyl substituent on the benzene ring of the benzimidazole unit which is positionally disordered over two positions. The molecule is essentially planar, the dihedral angle between the benzimidazole plane and the benzene ring being 3.49 (4)degrees. An intramolecular O-H center dot center dot center dot N hydrogen bond generates an S(6) ring motif. In the crystal packing, molecules are linked through N-H center dot center dot center dot O hydrogen bonds into chains along [201]. These chains are stacked approximately along the a-axis direction. The crystal packing is further stabilized by weak N-H center dot center dot center dot O and O center dot center dot center dot H center dot center dot center dot N hydrogen bonds, together with weak intermolecular C-H center dot center dot center dot pi interactions. A pi-pi interaction with a centroid-centroid distance of 3.6241 (6) angstrom is also observed between the substituted phenyl ring and that of the benzimidazole system.