4,6-Diamino-2-morpholino-5-nitrosopyrimidine: a polarized molecular structure within hydrogen-bonded sheets

In the title compound, C₈H₁₂N₆O₂, the molecular dimensions provide evidence for significant polarization of the electronic structure. There is an intramolecular N—H...N hydrogen bond, and the molecules are linked into complex sheets by a combination of two-centre hydrogen bonds, one each of the N—H...N and N—H...O types, and a three-centre N—H...(N,O) hydrogen bond.