title: 3-(3-Oxo-1,3-dihydroisobenzofuran-1-ylidene)pentane-2,4-dione.
abstract: In the title compound, C(13)H(10)O(4), prepared by the condensation reaction between phthalic anhydride and pentane-2,4-dione, one of the acetyl groups in the pentane-2,4-dione fragment is almost coplanar with the isobenzofuran ring system, while the other group is twisted out of this plane by almost 80 degrees . The corresponding C-C and C-O distances in the two acetyl units are consistent with dipolar delocalization into the coplanar unit only. There is no supramolecular aggregation of the molecules, but a number of rather short intermolecular contacts of C-H...O, O...O and O...C types occur.
authors.affiliation: Grupo de Investigación de Compuestos, Heterociclícos, Departamento de Química, Universidad de Valle, AA 25360, Colombia.
authors.forename: Jaime
authors.initials: J
authors.lastname: Portilla
authors.forename: Jairo
authors.initials: J
authors.lastname: Quiroga
authors.forename: Justo
authors.initials: J
authors.lastname: Cobo
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
mesh_terms: D001572:Benzofurans / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D010422:Pentanones / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: C522854:3-(3-oxo-1,3-dihydroisobenzofuran-1-ylidene)pentane-2,4-dione; D001572:Benzofurans; D010422:Pentanones