title: A hydrogen-bonded ribbon in 6-amino-3-methyl-5-nitroso-2-(pyrrolidin-1-yl)pyrimidin-4(3H)-one monohydrate and hydrogen-bonded sheets in 6-amino-2-dimethylamino-3-methyl-5-nitrosopyrimidin-4(3H)-one monohydrate.
abstract: In each of 6-amino-3-methyl-5-nitroso-2-(pyrrolidin-1-yl)pyrimidin-4(3H)-one monohydrate, C(9)H(13)N(5)O(2).H(2)O, (I), and 6-amino-2-dimethylamino-3-methyl-5-nitrosopyrimidin-4(3H)-one monohydrate, C(7)H(11)N(5)O(2).H(2)O, (II), the interatomic distances indicate significant polarization of the electronic structures of the pyrimidinone molecules. In each compound, the organic component contains an intramolecular N-H...O hydrogen bond. The molecular components in (I) are linked by a combination of two-centre O-H...O, O-H...N and N-H...O hydrogen bonds and a three-centre O-H...(NO) hydrogen bond to form a broad ribbon containing five distinct ring motifs. In compound (II), three intermolecular hydrogen bonds, one each of the O-H...O, O-H...N and N-H...O types, link the molecules into sheets containing equal numbers of centrosymmetric R(4)(4)(10) and R(10)(8)(34) rings.
authors.affiliation: Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.
authors.forename: Fabían
authors.initials: F
authors.lastname: Orozco
authors.forename: Braulio
authors.initials: B
authors.lastname: Insuasty
authors.forename: Justo
authors.initials: J
authors.lastname: Cobo
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D011743:Pyrimidines / Q000737:chemistry*; D011744:Pyrimidinones / Q000737:chemistry*
chemical_list: C545464:6-amino-2-dimethylamino-3-methyl-5-nitrosopyrimidin-4(3H)-one monohydrate; C545463:6-amino-3-methyl-5-nitroso-2-(pyrrolidin-1-yl)pyrimidin-4(3H)-one monohydrate; D011743:Pyrimidines; D011744:Pyrimidinones