%0 Journal Article %T 2,2-Dimethyl-5-{[(4-nitrophenyl)amino]methylidene}-1,3-dioxane-4,6-dione %A Ying-Hong Yang %A Zi-Cheng Li %A You-Fu Luo %J Acta Crystallographica Section E %D 2011 %I International Union of Crystallography %R 10.1107/s1600536811001103 %X In the title compound, C13H12N2O6, the dihedral angle between the benzene ring and the aminomethylene unit is 5.42 (16)¡ã, while the angle between the aminomethylene unit and the dioxane ring is 3.06 (43)¡ã. The dioxane ring shows a half-boat conformation, in which the C atom between the dioxane ring O atoms is 0.464 (10) out of the plane. An intramolecular N¡ªH...O hydrogen bond stabilizes the molecular conformation. In the crystal, a three-dimensional framework is built up via intermolecular N¡ªH...O hydrogen bonds. %U http://scripts.iucr.org/cgi-bin/paper?S1600536811001103