Yi, Chenyi Blum, Carmen Liu, Shi-Xia Keene, Tony D. Frei, Gabriela Neels, Antonia Decurtins, Silvio Isolable Zwitterionic Pyridinio-semiquinone π-Radicals. Mild and Efficient Single-Step Access to Stable Radicals A rational design based on the proton-coupled electron transfer (PCET) concept allows us to structurally characterize for the first time isolable, air- and moisture-stable semiquinone radicals in a zwitterionic neutral form. The presence of an alkoxy and the bulky pyridinio substituents causes only a minor perturbation of either the redox potentials or the spectral UV−vis characteristics of the semiquinone core but significantly stabilizes the new radicals. concept;PCET;Zwitterionic;Efficient;radical;characteristic;Access;Isolable;time isolable;perturbation;semiquinone core;zwitterionic;transfer;presence;pyridinio substituents causes;electron;Stable Radicals;redox potentials;UV;alkoxy;Mild 2009-06-04
    https://acs.figshare.com/articles/dataset/Isolable_Zwitterionic_Pyridinio_semiquinone_Radicals_Mild_and_Efficient_Single_Step_Access_to_Stable_Radicals/2852575
10.1021/ol900559p.s001