title: Structure of triphenylphosphine oxide hemihydrate.
abstract: C18H15OP.1/2H2O, Mr = 287.30, orthorhombic, Fdd2, a = 19.794 (18), b = 32.540 (12), c = 9.459 (6) A, V = 6092.5 (22) A3, Z = 16, Dx = 1.253 g cm-3, lambda(Mo K alpha) = 0.71073 A, mu = 1.76 cm-1, F(000) = 2416, T = 294 K, R = 0.037 for 1677 reflections with I greater than 3 sigma(I). The water O atoms sit on a crystallographic twofold axis and are linked by hydrogen bonds to two of the oxide molecules with O...OW distances of 2.856 (3) A. Considerable conformational flexibility is conferred on the molecule by the long P--C bonds (around 1.8 A each).
authors.affiliation: Smith Kline and French Laboratories, King of Prussia, PA 19406.
authors.forename: P W
authors.initials: PW
authors.lastname: Baures
authors.forename: J V
authors.initials: JV
authors.lastname: Silverton
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005583:Fourier Analysis; D008968:Molecular Conformation; D015394:Molecular Structure; D009943:Organophosphorus Compounds; D014961:X-Ray Diffraction
chemical_list: D009943:Organophosphorus Compounds; C063888:triphenylphosphine oxide