Abstract
In the title compound, C16H13ClFN3O2S, the dihedral angle between the benzene rings is 4.47 (3)degrees. The conformation of the thiazine ring is a half-chair and the Cl atom is in an axial orientation. In the crystal, molecules are linked by C-H center dot center dot center dot F interactions, generating C(12) chains propagating in [011]. Aromatic pi-pi stacking interactions [centroid-centroid separations = 3.753 (2) and 3.758 (2) angstrom] also occur.