The technique of carbon-arc evaporation has been successfully utilized to encapsulate a wide variety of rare-earth species in carbon cages. We have observed Mm@Cn (M = Ce, Nd, Sm, Eu, Gd, Tb, Dy, Ho, or Er) species present in the toluene extracts of the carbon soot using laser desorption mass spectrometry. The presence of multiple-metal species appears to depend strongly on the metal-to-carbon atom ratio found in the starting rods, with the higher metal concentrations favoring multiple-metal incorporation. One often observed dimetallofullerene is M2@C80. Molecular orbital arguments are presented to support a possible icosahedral structure for C80.
|Original language||English (US)|
|Number of pages||3|
|Journal||Journal of physical chemistry|
|State||Published - 1992|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry