2-(1H-Benzotriazol-1-Yl)-3-(2,6-Dichloro­Phen­Yl)-1-Phenyl­Propan-1-Ol

Abstract

The asymmetric unit of the title compound, C21H17Cl2N3O, contains two crystallographically independent mol­ecules with similar conformations. The benzotriazole ring is oriented at dihedral angles of 30.61 (5) and 43.36 (5)°, respectively, to the phenyl and dichloro­phenyl rings in one mol­ecule, and 32.25 (5) and 41.04 (5)° in the other. The dihedral angles between the phenyl and dichloro­phenyl rings are 66.38 (7) and 66.14 (6)° in the two mol­ecules. An intra­molecular O—H⋯N hydrogen bond links the benzotriazole ring and phenyl­propanol unit in each mol­ecule. In the crystal, weak inter­molecular C—H⋯N hydrogen bonds link the mol­ecules into chains along the a axis. π–π stacking between the dichloro­phenyl rings [centroid–centroid distances = 3.809 (1) and 3.735 (1) Å] may further stabilize the crystal structure.