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          Institute: MPI für bioanorganische Chemie     Collection: MPI für bioanorganische Chemie     Display Documents

ID: 713860.0, MPI für bioanorganische Chemie / MPI für bioanorganische Chemie
F-19 NMR-, ESR-, and vis-NIR-spectroelectrochemical study of the unconventional reduction behaviour of a perfluoroalkylated fullerene: dimerization of the C-70(CF3)(10)(-) radical anion
Authors:Zalibera, Michal; Machata, Peter; Clikeman, Tyler T.; Rosenkranz, Marco; Strauss, Steven H.; Boltalina, Olga V.; Popov, Alexey A.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Analyst
Journal Abbrev.:Analyst
Issue / Number:21
Start Page:7209
End Page:7216
Review Status:Internal review
Audience:Experts Only
Abstract / Description:The most abundant isomer of C-70(CF3)(10) (70-10-1) is a rare example of a perfluoroalkylated fullerene exhibiting electrochemically irreversible reduction. We show that electrochemical reversibility at the first reduction step is achieved at scan rates higher than 500 V s(-1). Applying ESR-, vis-NIR-, and F-19 NMR-spectroelectrochemistry, as well as mass spectrometry and DFT calculations, we show that the (70-10-1)(-) radical monoanion is in equilibrium with a singly-bonded diamagnetic dimeric dianion. This study is the first example of F-19 NMR spectroelectrochemistry, which promises to be an important method for the elucidation of redox mechanisms of fluoroorganic compounds. Additionally, we demonstrate the importance of combining different spectroelectrochemical methods and quantitative analysis of the transferred charge and spin numbers in the determination of the redox mechanism.
Comment of the Author/Creator:Date: 2015, 2015
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:N. N.
Affiliations:MPI für bioanorganische Chemie
External Affiliations:[Machata,P.; Rosenkranz,M.; Popov,A.A. ] Leibniz Inst Solid State & Mat Res, D-01069 Dresden, Germany.
[Clikeman,T.T.; Strauss,S.H.; Boltalina,O.V.; ] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA
Identifiers:ISI:000362795100017 [ID No:1]
ISSN:0003-2654 [ID No:2]
DOI:10.1039/c5an01129a [ID No:3]
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