title: 2,2-Dimethyl-5-(2-nitro-benzyl-idene)-1,3-dioxane-4,6-dione.
abstract: The asymmetric unit of the title compound, C13H11NO6, contains two mol-ecules in both of which the six-membered 1,3-dioxane-4,6-dione ring shows a screw-boat conformation. The dihedral angles between the best planes through the six-membered rings are 47.8 (2) and 49.8 (2)°. In the crystal, C-H⋯O inter-actions link the mol-ecules, building a supramolecular sheet parallel to the c axis.
authors.affiliation: Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, 72570, Puebla, Pue., Mexico.
authors.forename: Fernando
authors.initials: F
authors.lastname: García-Álvarez
authors.forename: Nancy
authors.initials: N
authors.lastname: Romero
authors.forename: Carlos E
authors.initials: CE
authors.lastname: Lobato-García
authors.forename: Joel L
authors.initials: JL
authors.lastname: Terán
authors.forename: Angel
authors.initials: A
authors.lastname: Mendoza