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In the title zwitterionic compound, C16H12N2O, the dihedral angle between the phenyl ring and the naphthalene ring system is 17.85 (8)°; an intramolecular N—H
O hydrogen bond occurs. In the crystal, π–π stacking is observed between naphthalene ring systems of adjacent molecules, the centroid–centroid distance being 3.6486 (11) Å.
O hydrogen bond occurs. In the crystal, π–π stacking is observed between naphthalene ring systems of adjacent molecules, the centroid–centroid distance being 3.6486 (11) Å.
