Comparative EPR study of CuC60 and N@C60 endofullerenes
Copyright 2005 John Wiley & Sons, Ltd
| Veröffentlicht in: | Magnetic resonance in chemistry : MRC. - 1985. - 43 Spec no.(2005) vom: 15. Nov., Seite S199-204 |
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| Weitere Verfasser: | , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2005
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| Zugriff auf das übergeordnete Werk: | Magnetic resonance in chemistry : MRC |
| Schlagworte: | Journal Article |
| Zusammenfassung: | Copyright 2005 John Wiley & Sons, Ltd A comparative study of C60-based endohedral fullerenes was performed. From an analysis of spin relaxation times of the recently characterized CuC60 metallo-endofullerene, it could be shown that the encased ion occupies a well-defined off-centre position even at room temperature. Localization on the timescale of an EPR experiment is combined with charge transfer of approximately two electrons, resulting in the EPR signature of a 3d9 copper ion. This is in contrast to N@C60, for which a nearly complete decoupling from the cage is found. An upper limit for the variance of collision-induced modulation of the anisotropic nitrogen hfi is determined as (A(eff)2)(1/2) < 500 kHz by an analysis of cross peak intensities in a 2D EPR experiment. Pulsed 95 GHZ ENDOR experiments have been performed to confirm that deformation-induced hyperfine anisotropies are expected to be very small in N@C60 |
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| Beschreibung: | Date Completed 22.12.2005 Date Revised 24.10.2005 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1097-458X |