1-Ethyl-3-methylquinoxalin-2(1H)-one

Abstract

The asymmetric unit of the title compound, C11H12N2O, contains two independent molecules. In the crystal structure, intermolecular C—H...O hydrogen bonds link the molecules. There are π–π contacts between the quinoxaline rings [centroid–centroid distances = 3.446 (2), 3.665 (2), 3.645 (3) and 3.815 (3) Å]. There also exist C—H...π contacts between the methyl groups and the quinoxaline rings.