title: 6-Amino-3-methyl-5-nitrosopyrimidine-2,4(1H,3H)-dione forms a three-dimensional hydrogen-bonded framework structure.
abstract: Molecules of the title compound, C(5)H(6)N(4)O(3), are linked into a single three-dimensional framework by a two-centre N-H.O hydrogen bond [H.O = 1.92 A, N.O = 2.785 (2) A and N-H.O = 168 degrees ], a two-centre N-H.H hydrogen bond [H.N = 2.19 A, N.N = 3.017 (2) A and N-H.N = 157 degrees ] and the intermolecular component of an effectively planar three-centre N-H.(O)(2) hydrogen bond [H.O = 2.03 and 2.31 A, N.O = 2.645 (2) and 2.957 (2) A, N-H.O = 126 and 130 degrees, and O.H.O = 101 degrees ].
authors.affiliation: Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, 23071 Jaén, Spain.
authors.forename: M Luz
authors.initials: ML
authors.lastname: Godino Salido
authors.forename: M Dolores
authors.initials: MD
authors.lastname: Gutiérrez Valero
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell