10.1021/ol900559p.s001
Chenyi Yi
Chenyi
Yi
Carmen Blum
Carmen
Blum
Shi-Xia Liu
Shi-Xia
Liu
Tony D. Keene
Tony D.
Keene
Gabriela Frei
Gabriela
Frei
Antonia Neels
Antonia
Neels
Silvio Decurtins
Silvio
Decurtins
Isolable Zwitterionic Pyridinio-semiquinone π-Radicals. Mild and Efficient Single-Step Access to Stable Radicals
American Chemical Society
2009
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 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/Isolable_Zwitterionic_Pyridinio_semiquinone_Radicals_Mild_and_Efficient_Single_Step_Access_to_Stable_Radicals/2852575
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.