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- W1964564692 abstract "The rate of oxidative quenching of 3C60 by chloranil (CA) in CH2Cl2 is much enhanced by added trifluoroacetic acid (TFA) or hexafluoro-2-propanol (HFIPA). These additives have similar hydrogen-bonding powers but differ widely in their proton acidities. In both cases, quenching rate constants calculated for H-bonded CA increase sharply with additive concentration. H-bonded clusters around the quinone are postulated in which electron transfer is coupled to fast protonation of CA-• by TFA, and strong H-bonding or solvation of charged radicals by HFIPA. This is consistent with observed neutral semiquinone formation, higher radical yields, and much slower back reactions for TFA. The C60+• spectrum (ε = 25 000 ± 2000 M-1 s-1 at 980 nm) shows low absorption throughout the visible region. Charge-shift reactions of C60+• and arenes follow Rehm−Weller−Marcus kinetics and afford efficient preparation of arene+• cation radicals using visible light." @default.
- W1964564692 created "2016-06-24" @default.
- W1964564692 creator A5003386382 @default.
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- W1964564692 date "2001-11-16" @default.
- W1964564692 modified "2023-10-15" @default.
- W1964564692 title "Oxidation of Triplet C<sub>60</sub> by Hydrogen-Bonded Chloranil: Efficient Formation, Spectrum and Charge-Shift Reactions of C<sub>60</sub><sup>+•</sup> Cation Radical" @default.
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- W1964564692 doi "https://doi.org/10.1021/jp012778s" @default.
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