The structural determination of endohedral metallofullerene Gd@C82 by XANES.

Although the Gd ion in Gd@C82 has been shown to lie above the C–C bond on the C2 axis as an anomalous structure from the MEM/Rietveld analysis, the present XANES study reveals that it lies above the hexagon on the C2 axis as a normal structure, and Gd oscillates around its equilibrium position with an amplitude increasing with temperature increase. [ABSTRACT FROM AUTHOR]