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J. Chem. Soc., Chem. Commun., 1987, 1061 - 1064, DOI: 10.1039/C39870001061


Complexation of Diquat by a bisparaphenylene-34-crown-10 derivative

Billy L. Allwood, Neil Spencer, Hooshang Shahriari-Zavareh, J. Fraser Stoddart and David J. Williams


X-Ray structural investigations of a bisparaphenylene-34-crown-10 derivative (BPP34C10) and its 1:1:1 complex with [Diquat][PF6]2 and H2O reveal that, of two crystallographically independent conformations (I and II) both supporting large molecular cavities, one (II) retains its gross shape on complexation and interacts with the [Diquat]2+ dication by means of hydrogen and electrostatic bonds whilst accommodating weak charge transfer interactions and a hydrogen bonded H2O molecule within the docking constraints and microcavity, respectively, imposed by the more dominant non-covalent forces.