4,5-Dichloro-2H-1,3-oxazine-2,6(3H)-dione

Abstract

In the title compound, C4HCl2NO3, the essentially planar (maximum deviation = 0.023 Å for the ring O atom) molecules form N—H...O hydrogen bonds between molecules lying about inversion centers, forming eight-membered rings with an R22(8) motif in graph-set notation.