3,3′-Dinitrobisphenol A

The title compound [systematic name: 2,2′-dinitro-4,4′-(propane-2,2-diyl)diphenol], C15H14N2O6, crystallizes with two molecules in the asymmetric unit. Both have a trans conformation for their OH groups, and in each, the two aromatic rings are nearly orthogonal, with dihedral angles of 88.30 (3) and 89.62 (2)°. The nitro groups are nearly in the planes of their attached benzene rings, with C—C—N—O torsion angles in the range 1.21 (17)–4.06 (17)°, and they each accept an intramolecular O—H⋯O hydrogen bond from their adjacent OH groups. One of the OH groups also forms a weak intermolecular O—H⋯O hydrogen bond.

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