N-(4-FLUOROPHENYL)-C,C-DIPHENYLNITRONE

C19H14FNO, M(r) = 291.33, orthorhombic, Pbca, a = 17.851 (3), b = 8.783 (1), c = 18.686 (3) angstrom, V = 2929.7 angstrom 3, Z = 8, D(x) = 1.32 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 0.053 mm-1, F(000) = 1216, T = 293 K, R = 0.049 for 1511 unique reflexions [F greater-than-or-equal-to 3-sigma(F)]. The nitrone and bonded C atoms are nearly planar [O = N = C-Ph = 3.1 (1)degrees]. However all the aromatic rings are twisted [C-N-C-C = 67.4 (3), N-C-C-C = 33.0 (3), 57.8 (3)degrees]. The molecular conformation and dimensions agree with those of the unfluorinated compound [Brown & Trefonas (1973). Acta Cryst. B29, 237-241; Falshaw, Hashi & Taylor (1985). J. Chem. Soc. Perkin Trans. 1, pp. 1837-1843] with which it is isomorphous.