Tying molecules together in a link results in tremendous stabilization of the radical species they can form. Six clearly distinguishable charged states — which can be interconverted reversibly — have now been observed in a densely cationic system.
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Amabilino, D. Highly charged. Nature Chem 5, 365–366 (2013). https://doi.org/10.1038/nchem.1611
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DOI: https://doi.org/10.1038/nchem.1611
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