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Carbon Dioxide Activation by Surface Excess Electrons. An EPR Study of the CO2- Radical Ion Adsorbed on the Surface of MgO

Articolo
Data di Pubblicazione:
2007
Abstract:
The CO2- radical anion has been generated at the surface of MgO by direct electron transfer from surface trapped excess electrons and characterized by electron paramagnetic resonance spectroscopy. Both C-13 and O-17 hyperfine structures have been resolved for the first time, leading to a detailed mapping of the unpaired electron spin density distribution over the entire radical anion. The magnetic equivalence of the two O nuclei has been ascertained allowing a side-on a sorption structure at low-coordinate Mg2+ ions to be proposed for the surface stabilized radical.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
CO2 activation; electron transfer; EPR spectroscopy; MgO surface
Elenco autori:
M. CHIESA; E. GIAMELLO
Autori di Ateneo:
CHIESA Mario
Link alla scheda completa:
https://iris.unito.it/handle/2318/21519
Pubblicato in:
CHEMISTRY-A EUROPEAN JOURNAL
Journal
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