1,4-Dibenzyl-6-chloroquinoxaline-2,3(1H,4H)-dione

Abstract

The title compound, C22H17ClN2O2, crystallizes with two independent molecules (AandB) in the asymmetric unit. The 6-chloroquinoxaline-2,3(1H,4H)-dione ring system is essentially planar. The dihedral angles between the mean planes of the 6-chloroquinoxaline-2,3(1H,4H)-dione ring and the phenyl rings of the benzyl substituents in the two molecules are 68.34 and 73.8 (7)° forA, and 73.8 (5) and 80.7 (1)° forB, so that these rings point away from the quinoxaline ring system. In the crystal, weak C—H...O hydrogen bonds and π–π stacking interactions link the molecules into a three-dimensional network.