Acta Cryst. (2008). E64, o77 [ doi:10.1107/S1600536807057455 ]
Abstract: The title compound, C28H16N2O5, is a bis-imide derivative in which two phthalimide units are linked by an oxydi-p-phenylene bridge. The dihedral angle between the planes of the two central benzene rings is 86.1 (4)°. The isoindole groups make dihedral angles of 46.0 (14) and 77.5 (13)° with the attached benzene rings. Intermolecular C-HO hydrogen bonds contribute to the stability of the structure.
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