A metallofullerene that encapsulates ²²⁵Ac

The properties of a metallofullerene that encapsulates Ac-225 were studied by radio-chromatographic methods. The results of chromatography on a Buckyclutcher column suggest that there are some metallofullerene isomers of AcC82. The identical HPLC retention time of the major AcC82 peak with that of La@C-82 indicates that the structure of one of the AcC82 isomers is the same as La@C-82.