N, N, N′, N′-Tetra­phenyl-1,1′-biphenyl-4,4′-diamine.

The mol­ecule of the title compound, C36H28N2, adopts a propeller-like shape and possesses crystallographically imposed twofold rotation symmetry. The N atom has an almost ideal trigonal geometry, indicating that the lone electron pair is involved in conjugation with the system of aromatic rings. [ABSTRACT FROM AUTHOR]