American Chemical Society, Journal of the American Chemical Society, 30(136), p. 10569-10572, 2014
DOI: 10.1021/ja505093d
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An octacationic homo[2]catenane comprised of two mechanically interlocked cyclobis(paraquat-p-phenylene) rings has been obtained from the oxidation of the septacationic monoradical with nitrosonium hexafluoroantimonate. The nanoconfinement of normally repulsive bipyridinium units results in the enforced pi-overlap of eight positively charged pyridinium rings in a volume of