Date Published: July 01, 2011
Publisher: International Union of Crystallography
Author(s): David B. Cordes, Guoxiong Hua, Alexandra M. Z. Slawin, J. Derek Woollins.
The dioxaphospholane ring in the title compound, C20H17O3P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face π–π interactions, instead weak C—H⋯π interactions occur between adjacent molecules. The methine H atoms on the dioxaphospholane ring form weak C—H⋯O hydrogen bonds to the oxide group of an adjacent molecule.
For the synthesis of the title compound and isomeric forms, see: Ovchinnikov et al. (1979 ▶, 1995 ▶); Chauvin (1990 ▶). For related structures of dioxaphospholane oxides, see: Hoppe et al. (1985 ▶); Ananikov et al. (2010 ▶); Han et al. (2008 ▶).