1-Benzyl-2-phenyl-1H-benzimidazole-4,4'-(cyclo-hexane-1,1-di-yl)diphenol (1/1).

The asymmetric unit of the title co-crystal, C(20)H(16)N(2)·C(18)H(20)O(2), contains one mol-ecule of 4,4'-(cyclo-hexane-1,1-di-yl)diphenol (in which the cyclo-hexane ring adopts a chair conformation) and one mol-ecule of 1-benzyl-2-phenyl-1H-benzimidazole, which are paired through an O-H⋯N hydrogen bond. These pairs are further linked by inter-molecular O-H⋯O hydrogen bonds into chains along [010]. Weak inter-molecular C-H⋯O and C-H⋯π inter-actions further consolidate the crystal packing. The dihedral angles between the pendant phenyl rings and the benzimidazole ring are 86.9†(2) and 43.1†(2)°.