Crystal structure of flumioxazin

Acta Crystallogr E Crystallogr Commun. 2015 Sep 17;71(Pt 10):o768. doi: 10.1107/S2056989015017223. eCollection 2015 Oct 1.

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.

Keywords: 1,4-benzoxazine; 1H-iso­indole; C—H⋯F hydrogen bonds; crystal structure; dicarboximide herbicide; flumioxazin.