Three-centre hydrogen bonds in triphenylphosphine oxide-hydroquinone (1/1)

Moreno-Fuquen, R., Valderrama-N, J., Shankland, K. ORCID: https://orcid.org/0000-0001-6566-0155, Fabbiani, F.P.A. and Markvardsen, A.J. (2008) Three-centre hydrogen bonds in triphenylphosphine oxide-hydroquinone (1/1). Acta Crystallographica Section E, 64 (2). O367-U1679. ISSN 1600-5368 doi: 10.1107/S1600536807067414

Abstract/Summary

The title cocrystal, C18H15OP center dot C6H6O2, belongs to a series of molecular systems based on triphenylphosphine P-oxide. The O atom of the oxide group acts as an acceptor for hydrogen bonds from OH groups of two hydroquinone molecules which lie on inversion centres [O center dot center dot center dot O = 2.7451 (17) and 2.681 (2) A S]. The crystal structure is stabilized by weak C-H center dot center dot center dot O hydrogen bonds, forming a C-2(1)(8) chain which runs parallel to the [100] direction.