2-Methyl-4,4-dioxo-N-phenyl-5,6-dihydro-1,4-oxathiine-3-carboxamide (Oxycarboxin)

Abstract

In the title compound, C12H13NO4S, a systemic fungicide, the heterocycle adopts a lounge chair conformation and the dihedral angle between the ring planes is 25.8 (2)°. Inter-molecular C - H⋯O hydrogen bonds are noted in the crystal structure. Also observed is a short interaction of a methyl-ene hydrogen atom with the π-electron system of a phenyl ring in an adjacent molecule.