title: Tris[3,5-bis-(trifluoro-meth-yl)phen-yl]phosphine oxide.
abstract: In the title compound, C(24)H(9)F(18)OP, an intra-molecular C-H⋯O short contact generates a five-membered ring, producing an S(5) ring motif. The dihedral angles between the benzene rings are 57.68 (10), 77.80 (11) and 79.48 (10)°. Each of the six trifluoro-methyl substituents shows rotational disorder over two positions with refined site-occupany ratios of 0.64 (3)/0.36 (3), 0.649 (14)/0.351 (14), 0.52 (2)/0.48 (2), 0.545 (16)/0.455 (16), 0.774 (9)/0.226 (9) and 0.63 (5)/0.37 (5). The crystal structure is stabilized by inter-molecular C-H⋯O and C-H⋯F inter-actions.
authors.forename: Omar Bin
authors.initials: OB
authors.lastname: Shawkataly
authors.forename: Mohd Aslam A
authors.initials: MA
authors.lastname: Pankhi
authors.forename: Mohamed Ismail
authors.initials: MI
authors.lastname: Mohamed-Ibrahim
authors.forename: M Razak
authors.initials: MR
authors.lastname: Hamdan
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun