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January 15, 1994Acta Crystallographica Section C Crystal Structure CommunicationsOpen Access

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

George Ferguson John F. Gallagher C. Glidewell C.M. Zakaria

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Abstract

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)A,, is too long for any O--H..-O hydrogen-bond formation. Instead, there are O--H~..Tr(arene) interactions between the hydroxyl group of one molecule and a phenyl group of a centrosymmetrically 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)~,, respectively. These intermolecular contacts are the only driving force towards dimer formation in the solid state.

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Ferguson et al. (1994) studied this question.

synapsesocial.com/papers/6a83c47b8dcee831255bcf01 https://doi.org/10.1107/s0108270193007164

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