• 1 Department of Chemistry, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
  • 2 Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
  • 3 School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800 USM, Malaysia
Acta Crystallogr E Crystallogr Commun, 2020 Jan 01;76(Pt 1):91-94.
PMID: 31921459 DOI: 10.1107/S2056989019016852


The mol-ecule of the title compound, C28H22N4O9, exhibits crystallographically imposed twofold rotational symmetry, with a dihedral angle of 66.0 (2)° between the planes of the two central benzene rings bounded to the central oxygen atom. The dihedral angle between the planes of the central benzene ring and the terminal phenol ring is 4.9 (2)°. Each half of the mol-ecule exhibits an imine E configuration. An intra-molecular O-H⋯N hydrogen bond is present. In the crystal, the mol-ecules are linked into layers parallel to the ab plane via C-H⋯O hydrogen bonds. The crystal studied was refined as a two-component pseudomerohedral twin.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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