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The title Schiff base compound, C28H26N2O2, possesses both OH and NH tautomeric character in its mol­ecular structure. While the OH side of the compound is described as an inter­mediate state, its NH side adopts a predominantly zwitterionic form. The mol­ecular structure of the compound is stabilized by both N+—H...O and O—H...N intra­molecular hydrogen bonds. There are two weak C—H...O hydrogen bonds leading to polymeric chains of topology C(5) and C(13) running along the b axis of the unit cell. In addition, inter­molecular C—H...π inter­actions serve to stabilize the extended structure.
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