Isolation and Crystallographic Characterization of Tm3N@D2 (35)-C88

Tm3N@D2(35)-C88 has been prepared by vaporization of graphite rods doped with Tm2O3, graphite powder, and iron nitride in a Krätschmer-Huffman arc-discharge fullerene generator and isolated by high pressure liquid chromatography. A single crystal X-ray diffraction study reveals the dimensions of the D2(35)-C88 cage and the positioning of the Tm3N unit inside.