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

The title mol­ecule, C(32)H(24)N(6)O(2), 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.