Abstract
The title compound, C26H20N2, was obtained during a search for new π-extended 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-H⋯π (arene) inter-actions link the mol-ecules, but no π-π inter-actions between aromatic rings are observed.
Highlights
The title compound, C26H20N2, was obtained during a search for new extended ligands with the potential to generate efficient phosphors with iridium(III) for organic light-emitting devices (OLEDs)
A pseudo-twofold rotation axis runs through the midpoints of the C2—C3 and C9—C10 bonds
For example, deep-red emissive iridium(III) complexes containing 2,3-diphenylquinoxaline, in which red emissions contributed to the conjugated structure of the dpq ligand (Song et al, 2015)
Summary
Quinoxalines are well-known nitrogen-containing heterocyclic compounds, and substituted quinoxalines are important ligands with transition metals (Achelle et al, 2013; Floris et al, 2017; Tariq et al, 2018). They act as chelating agents bearing ring complexes bounded by a benzene ring and a pyrazine ring. For example, deep-red emissive iridium(III) complexes containing 2,3-diphenylquinoxaline (dpqH), in which red emissions contributed to the conjugated structure of the dpq ligand (Song et al, 2015).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
