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Paper

J. Chem. Soc., Chem. Commun., 1987, 1066 - 1069, DOI: 10.1039/C39870001066


Complex formation between bisparaphenylene-(3n+ 4)-crown-n ethers and the Paraquat and Diquat dications

Peter R. Ashton, Alexandra M. Z. Slawin, Neil Spencer, J. Fraser Stoddart and David J. Williams


U.v. and n.m.r. spectroscopic investigations in solution have been employed to assess the ability of a series (n= 7–12) of bisparaphenylene-(3n+ 4)-crown-n ethers to form stable 1:1 complexes with [Diquat]2+ and [Paraquat]2+ dications; these mappings of molecular recognition are supported by fast atom bombardment mass spectrometry of the 1:1 complexes with both [Diquat][PF6]2 and [Paraquat][PF6]2, and a single crystal X-ray structure analysis of [Diquat·BPP31C9][PF6]2.