Crystal structure of 2,3-bis(4-methylphenyl)benzo[g]quinoxaline

Abstract

The title compound, C 26 H 20 N 2 , was obtained during a search for newextended ligands with the potential to generate efficient phosphors with iridium(III) for organic light-emitting devices (OLEDs). The benzoquinoxaline ring system is almost planar (r.m.s. deviation = 0.076 Å ). A pseudo-twofold rotation axis runs through the midpoints of the C2-C3 and C9-C10 bonds. The two phenyl rings are twisted relative to the benzoquinoxaline ring system, making dihedral angles of 53.91 (4) and 36.86 (6) . In the crystal, C-HÁ Á Á (arene) interactions link the molecules, but no -interactions between aromatic rings are observed.