Anhui Engineering Technology Research Center for Extraction and Isolation of Active Components, Anhui Academy of Applied Technology, Hefei, 230031, People's Republic of China
The title molecule, C11H6F5NO, lies on a mirror plane in the orthorhombic unit cell, with only two F atoms each of the difluoro and trifluoromethyl substituents lying out of the plane. In the crystal, molecules are linked by C—H...O, C—H...N and C—H...F hydrogen bonds, forming a layer structure parallel to the (001) plane. Weak π–π interactions promote the formation of a three-dimensional network.