title: 5-Fluoro-1-(3-metylbutano-yl)pyrimidine-2,4(1H,3H)-dione.
abstract: The 3-methyl-butanoyl group and the 5-fluoro-uracil unit of the title compound, C(9)H(11)FN(2)O(3), are essentially coplanar, with the carbonyl group oriented towards the ring CH group and away from the nearer ring carbonyl group. The 3-methyl-butanoyl (C=)C-N-C=O torsion angle of 9.6 (2)° is comparable to that in structurally related compounds. In the solid state, two inversion-related mol-ecules form N-H⋯O hydrogen bonds to generate an inter-molecular R(2) (2)(8) ring. The crystal structure also diplays intra- and inter-molecular C-H⋯O inter-actions.
authors.forename: Hans-Joachim
authors.initials: HJ
authors.lastname: Lehmler
authors.forename: Sean
authors.initials: S
authors.lastname: Parkin