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Single-electron self-exchange between cage hydrocarbons and their radical cations in the gas phase.
ChemPhysChem 11, 713-721 (2010)
We show that the radical cations of adamantane (C(10)H(16)(*+), 1H(*+)) and perdeuteroadamantane (C(10)D(16)(*+), 1D(*+)) are stable species in the gas phase. The radical cation of adamantylideneadamantane (C(20)H(28)(*+), 2H(*+)) is also stable (as in solution). By using the natural (13)C abundances of the ions, we determine the rate constants for the reversible isergonic single-electron transfer (SET) processes involving the dyads 1H(*+)/1H, 1D(*+)/1D and 2H(*+)/2H. Rate constants for the reaction 1H(*+)+1D <==> 1H+1D(*+) are also determined and Marcus' cross-term equation is shown to hold in this case. The rate constants for the isergonic processes are extremely high, practically collision-controlled. Ab initio computations of the electronic coupling (H(DA)) and the reorganization energy (lambda) allow rationalization of the mechanism of the process and give insights into the possible role of intermediate complexes in the reaction mechanism.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
Scopus
Cited By
Cited By
Altmetric
3.453
1.260
9
9
Anmerkungen
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Ab initio calculations; Cage compounds; Electron transfer; Hydrocarbons; Radical ions
Sprache
englisch
Veröffentlichungsjahr
2010
HGF-Berichtsjahr
2010
ISSN (print) / ISBN
1439-4235
e-ISSN
1439-7641
Zeitschrift
ChemPhysChem
Quellenangaben
Band: 11,
Heft: 3,
Seiten: 713-721
Verlag
Wiley
Verlagsort
Weinheim
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Ecological Chemistry (IOEC)
PSP-Element(e)
G-505100-001
Erfassungsdatum
2010-03-19