3,3′-Dinitrobisphenol A

Abstract

The title compound [systematic name: 2,2′-dinitro-4,4′- (propane-2,2-di-yl)diphenol], C 15H 14N 2O 6, 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 intra-molecular 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.