2,2′-[1,5-Bis(4-aminophenyl)-1,5-dihydrobenzo[1,2-d;4,5-d′]diimidazole-2,6-diyl]diphenol

The title molecule, C32H24N6O2, has a crystallographic inversion centre in the middle of the benzodiimidazole core. It exists as the enol–imine tautomeric form and exhibits a strong intramolecular O—H...N hydrogen bond. The dihedral angles between the planes of the 2-hydroxyphenyl and 4-aminophenyl substituents and the plane of the benzodiimidazole unit [12.69 (8) and 84.71 (8)°, respectively] differ significantly due to steric reasons. In the crystal, molecules are linked by C—H...π interactions, forming a two-dimensional network