Acta Cryst. (2009). E65, o2171  [ doi:10.1107/S1600536809031535 ]

2,2-Dimethyl-5-[(3-nitroanilino)methylene]-1,3-dioxane-4,6-dione

M. Zhou, R. Li and Z.-Y. Ding

Abstract: The benzene ring of the title compound, C₁₃H₁₂N₂O₆, is twisted away from the planes of the aminomethylene unit and the dioxane ring by 30.13 (4) and 35.89 (4)°, respectively. The dioxane ring exhibits a half-boat conformation, in which the C atom between the dioxane O atoms is 0.553 (8) Å out-of-plane. An intramolecular N-HO hydrogen bond stabilizes the conformation of the dioxane ring with the aminomethylene group [the dihedral angle between the mean planes of the dioxane ring and the aminomethylene group is 11.61 (4)°]. In the crystal, a three-dimensional framework is built via weak intermolecular N-HO and C-HO interactions.

Online 15 August 2009

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