( E)-1-(Diphenylphosphinyl)-2-(1-hydroxycyclohexyl)ethene.

The molecule of the title compound, C20H23PO2, displays an E configuration about the C=C bond. The two phenyl rings are nearly perpendicular to each other with a dihedral angle of 80.09 (8)°. Intermolecular O—H...O hydrogen bonding and π–π stacking between parallel benzene rings of adjacent molecules, with a iperpendicular distance of 3.4928 (3) Å, help to stabilize the crystal structure. [ABSTRACT FROM AUTHOR]