Temperature dependent metal cluster position inside a C-82 cage: Sc-3@C-82

Citation
A. Bartl et L. Dunsch, Temperature dependent metal cluster position inside a C-82 cage: Sc-3@C-82, SYNTH METAL, 121(1-3), 2001, pp. 1147-1148
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
121
Issue
1-3
Year of publication
2001
Pages
1147 - 1148
Database
ISI
SICI code
0379-6779(20010315)121:1-3<1147:TDMCPI>2.0.ZU;2-J
Abstract
ESR studies on Sc-3@C-82 in dependence on the temperature and of the used s olvent have led to a new behaviour of the scandium cluster stabilization in side the carbon cages. A 22 line spectrum, which can be measured down to 20 0 K, is well known from the literature. In the region from 300 K to 200 K t he coupling constant of the scandium splitting increases reversibly with de creasing temperature. At 240 K a superposition of the 22 line spectrum and a single line appears. In the temperature range of 180 K and 150 K the obse rved single line forms the main part of the ESR spectrum. This effect is co mpletely reversible. This behaviour at low temperatures is explained by a model including the ch ance of the metal cluster position inside the C-82 cage below 200 K and the chemical pressure of the frozen solvent.