The asymmetric unit of the title Schiff base molecule, C25H20N2O, contains two independent molecules. In each molecule, the C=N bond is in an E conformation. The most significant difference between the two molecules is seen for the dihedral angles between the methoxy-substituted benzene ring and the two phenyl rings, which are 85.5 (1) and 82.3 (1)° in the first molecule, and 49.0 (1) and 40.4 (1)° in the second. This conformational difference is reflected in the central C=N—C C torsion angle, which is 28.7 (2)° in the first molecule and −29.8 (3)° in the other. In each molecule, there is an intramolecular O—H⋯N hydrogen bond.
Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.005 Å; R factor = 0.044; wR factor = 0.113; data-to-parameter ratio = 8.0.In the title Schiff base molecule, C 29 H 28 N 2 O 3 , the three terminal benzene rings are twisted by 73.84 (15), 81.25 (16) and 12.1 (2) with respect to the central benzene ring. An intramolecular O-HÁ Á ÁN hydrogen bond occurs. In the crystal, molecules are linked via weak C-HÁ Á Á interactions into a three-dimensional supramolecular architecture.
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