N , N -Diethyl-2-hydroxyethanaminium 2,6-dioxo-5-(2,4,6-trinitrophenyl)-1,2,3,6-tetrahydropyrimidin-4-olate dihydrate

In the title molecular salt, C6H16NO+·C10H4N5O9−·2H2O, which crystallizes as a dihydrate, O—H...O hydrogen bonds link the barbiturate anion, the ethanaminium cation and the water molecules of crystallization. The dihedral angle between the rings in the anion is 43.71 (8)°. In the crystal, an R22(8) ring motif hydrogen-bonding pattern is also found involving inversion-related barbiturate rings with N—H...O hydrogen bonds. As a result of the various hydrogen bonds an infinite two-dimensional network, propagating in (10-1), is formed.