ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.62, 2006 (SCI-Expanded)
Crystals of the title compound, C15H10F3NO3, are stabilized by N - (HO)-O-... and C - (HO)-O-... intermolecular hydrogen bonds and by weak C - H-...pi interactions. In the structure, paired C (HO)-O-... hydrogen bonds link the molecules into R-2(2)( 10) dimers. The hydrogen-bonded R-2(2)(10) dimers are linked by intermolecular N - (HO)-O-... hydrogen bonds and generate R-6(4)(22) rings. The phthalide section of the molecule is planar and the dihedral angle between the phthalide group and the benzene ring is 56.31 ( 17)degrees.