Crystal structure of tri­methyl­ammonium 5-(24-di­nitro­phen­yl)-13-dimethyl-26-dioxo-1236-tetra­hydro­pyrimidin-4-olate

摘要

The asymmetric unit of the title mol­ecular salt, C3H10N⁺·C12H9N4O7 ⁻ [alternative name: tri­methyl­ammonium 5-(2,4-di­nitro­phen­yl)-1,3-dimethyl barbiturate], contains one anion and two half-occupancy cations. The cations are disordered about inversion centres. The tetra­hydro­pyrimidine ring is essentially planar [maximum deviation = 0.007 (2) Å] and forms a dihedral angle of 41.12 (6)° with the plane of the benzene ring. In the crystal, N—H⋯O hydrogen bonds link the cations to the anions.