O-H...?(arene) Intermolecular Hydrogen Bonding in the Structure of 1,1,2-Triphenylethanol

Article abstract of DOI:10.1107/S0108270193007164

The 1,1,2-triphenylethanol molecule, Ph2(PhCH2)COH (I), forms centrosymmetric dimers in the solid state.The shortest O...O separation, 5.837(3) Angstroem, is too long for any O-H...O hydrogen-bond formation.Instead, there are O-H...?(arene) interactions between the hydroxyl group of one molecule and a phenyl group of acentrosymmetrically related molecule.The O...C and H...C distances between the hydroxyl group and the closest phenyl-ring C atom are 3.525(4) and 2.73(4) Angstroem, respectively.These intermolecular contacts are the only driving force towards dimer formation in the solid state.