Acta Cryst. (2008). E64, o388 [ doi:10.1107/S1600536807068249 ]
Abstract: The molecule of the title compound, C31H16F6N2O4, consists of two phthalimide units linked by a [bis(trifluoromethyl)methylene]di-p-phenylene bridge, with the two halves of the molecule related to each other by a twofold rotation axis. The dihedral angle between the planes of the two central benzene rings is 70.5 (3)°. The terminal isoindole groups are approximately planar, with a maximum r.m.s. deviation of 0.006 Å from the mean plane, and they form dihedral angles of 46.03 (3)° to the attached benzene rings. Intermolecular C-HO hydrogen bonds link neighboring molecules into chains along the c axis.
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