Acta Cryst. (2007). E63, o3969  [ doi:10.1107/S1600536807042055 ]

2,3-Bis(3-nitrophenyl)quinoxaline

P. Lei, Z.-Z. Hu, C.-P. Wang, X. Chen and Z.-Q. Zhang

Abstract: The title compound, C₂₀H₁₂N₄O₄, contains two benzene rings ortho bonded to a quinoxaline nucleus. The dihedral angle between the benzene rings is 59.2 (4)°. The two benzene rings adopt a trans configuration with respect to the quinoxaline plane. The formal C-C -bond substituted by nitrophenyl groups is shorter than normal C-C bonds and the C(benzene)-C(quinoxaline) bonds. These features are consistent with electron delocalization over the whole molecule.

Online 8 September 2007

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