Acta Crystallographica Section E: Crystallographic Communications (May 2016)
Crystal structure of 4′-bromo-2,5-dihydroxy-2′,5′-dimethoxy-[1,1′-biphenyl]-3,4-dicarbonitrile
Abstract
In the crystal of the title substituted hemibiquinone derivative, C16H11BrN2O4 or [BrHBQH2(CN)2], the substituted benzene rings are rotated about the central C—C bond, forming a dihedral angle of 53.59 (7)°. The ring systems interact through an intramolecular O—H...Omethoxy hydrogen bond, which induces a geometry quite different from those in previously reported hemibiquinone structures. In the crystal, the molecules associate through an intermolecular O—H...Nnitrile hydrogen bond, forming chains which extend along [100] and are interlinked through very weak C—H...N hydrogen bonds, giving a overall two-dimensional structure lying parallel to (010).
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