Acta Crystallographica Section E (May 2009)

Tris[3,5-bis(trifluoromethyl)phenyl]phosphine oxide

  • M. Razak Hamdan,
  • Mohamed Ismail Mohamed-Ibrahim,
  • Mohd. Aslam A. Pankhi,
  • Omar bin Shawkataly,
  • Hoong-Kun Fun

DOI
https://doi.org/10.1107/s1600536809013488
Journal volume & issue
Vol. 65, no. 5
pp. o1080 – o1080

Abstract

Read online

In the title compound, C24H9F18OP, an intramolecular 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 trifluoromethyl 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 intermolecular C—H...O and C—H...F interactions.