Crystal structure of 3-amino-2-ethylquinazolin-4(3H)-one

Abstract

The molecule of the title compound, C10H11N3O, is planar, including the ethyl group, as indicated by the N-C-C-C torsion angle of 1.5 (2) °. In the crystal, inversion-related molecules are stacked along the a axis. Molecules are oriented head-to-tail and display π-π interactions with a centroid-to-centroid distance of 3.6664 (8) Å. N-H···O hydrogen bonds between molecules generate a 'step' structure through formation of an R22(10) ring.