Abstract
Ce@C82 has been isolated with a purity of ∼99.5% by an efficient solvent extraction procedure, followed by HPLC separation. The UV−vis−near-IR absorption spectrum of the metallofullerene was measured at a wavelength range from 300 to 2100 nm. X-ray photoelectron spectroscopy (XPS) of Ce@C82 has been studied. The results suggest that, analogous to the La in La@C82, the Ce in Ce@C82 donates three valence electrons to the carbon cage as opposed to two electrons suggested by a recent ab initio calculation.
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