Structural studies of 1:1 quinone-hydroquinone complexes

Desiraju, Gautam R. ; Curtin, David Y. ; Paul, Iain C. (1979) Structural studies of 1:1 quinone-hydroquinone complexes Molecular Crystals and Liquid Crystals, 52 . pp. 259-266. ISSN 1542-1406

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The structures of the 1:1 quinone-hydroquinone complexes of 2-phenyl and of 2-(4'-chloro) phenylbenzoquinone have been studied by X-ray methods. A superficial study would indicate that the quinhydrones are centrosymmetric and belong to the space group P21/c. However, other evidence indicates that the true crystal structure may belong to either the space group P21 or to Pc, or that the crystal may contain regions that would coresspond to each of these two non-centrosymmetric space groups. Some possible consequences of such a structural arrangement are briefly discussed.

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