O–H ⋯ π(arene) intermolecular hydrogen bonding in the structure of 1,1,2‐triphenylethanol

The 1,1,2-triphenylethanol molecule, Ph2(PhCH2)COH\ud(I), forms centrosymmetric dimers in the solid state.\udThe shortest O-..O separation, 5.837 (3)A,, is too long\udfor any O--H..-O hydrogen-bond formation. Instead,\udthere are O--H~..π(arene) interactions between the\udhydroxyl group of one molecule and a phenyl group of\uda centrosymmetrically related molecule. The O...C and\udH-..C distances between the hydroxyl group and the\udclosest phenyl-ring C atom are 3.525 (4) and 2.73 (4)~,,\udrespectively. These intermolecular contacts are the only\uddriving force towards dimer formation in the solid state