title: Crystal structure of flumioxazin.
abstract: The title compound {systematic name: 2-[7-fluoro-3,4-di-hydro-3-oxo-4-(prop-2-yn-1-yl)-2H-1,4-benzoxazin-6-yl]-4,5,6,7-tetra-hydro-1H-iso-indole-1,3(2H)-dione}, C19H15FN2O4, is a dicarboximide herbicide. The dihedral angle between the male-imide and benzene ring planes is 66.13 (5)°. In the crystal, C-H⋯O and C-H⋯F hydrogen bonds and weak C-H⋯π inter-actions [3.5601 (19) Å] link adjacent mol-ecules, forming two-dimensional networks extending parallel to the (110) plane.
authors.affiliation: Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea.
authors.forename: Hyunjin
authors.initials: H
authors.lastname: Park
authors.affiliation: Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea.
authors.forename: Jineun
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea.
authors.forename: Eunjin
authors.initials: E
authors.lastname: Kwon
authors.affiliation: Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea.
authors.forename: Tae Ho
authors.initials: TH
authors.lastname: Kim
keywords: 1,4-benzoxazine; 1H-iso­indole; C—H⋯F hydrogen bonds; crystal structure; dicarboximide herbicide; flumioxazin