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.

3,6-Di-tert-butyl-9-(quinolin-6-yl)-9H-carbazole

In the title compound, C₂₉H₃₀N₂, the dihedral angle between the mean planes of the carbazole and the quinoline systems is 52.41 (6)°. Mol­ecules are linked into dimers by pairs of inter­molecular C—H...N hydrogen bonds and into a three-dimensional network by C—H...π inter­actions.