6-[4-(Diphenylamino)phenyl]quinoline 1-oxide

In the title molecule, C27H20N2O, a triphenylamine derivative of quinoline, the three benzene rings linked through an N atom form a propeller shape, with dihedral angles between the mean planes of pairs of rings of 75.57 (9), 55.68 (9) and 83.66 (9)°. The quinoline ring is essentially planar, with an r.m.s. deviation of the fitted atoms of 0.0155 Å, and forms a dihedral angle of 33.52 (8)° with the benzene ring to which it is bonded. Weak C—H⋯π interactions are also observed in the crystal structure.

In the title molecule, C 27 H 20 N 2 O, a triphenylamine derivative of quinoline, the three benzene rings linked through an N atom form a propeller shape, with dihedral angles between the mean planes of pairs of rings of 75.57 (9), 55.68 (9) and 83.66 (9) . The quinoline ring is essentially planar, with an r.m.s. deviation of the fitted atoms of 0.0155 Å , and forms a dihedral angle of 33.52 (8) with the benzene ring to which it is bonded. Weak C-HÁ Á Á interactions are also observed in the crystal structure.   Table 1 Hydrogen-bond geometry (Å , ).

Related literature
Cg3 is the centroid of the C7-C12 benzene ring.
We report herein the crystal structure of the title compound.

Refinement
All H atoms were placed geometrically with C-H = 0.93 Å and refined as riding with U iso (H) = 1.2U eq (C).  The molecular structure of the title molecule showing the atom-numbering scheme and displacement ellipsoids at the 30% probability level.

Figure 2
A packing diagram of the title compound. The weak C-H···π interactions are shown as dashed lines.