ic5b01814_si_002.cif (2.64 MB)

Isolation and Crystallographic Characterization of Gd3N@D2(35)‑C88 through Non-Chromatographic Methods

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posted on 04.01.2016, 00:00 by Steven Stevenson, Kristine D. Arvola, Muska Fahim, Benjamin R. Martin, Kamran B. Ghiassi, Marilyn M. Olmstead, Alan L. Balch
While several nonchromatographic methods are available for the isolation and purification of endohedral fullerenes of the type M3N@Ih-C80, little work has been done that would allow other members of the M3N@C2n family to be isolated with minimal chromatography. Here, we report that Gd3N@D2(35)-C88 can be isolated from the multitude of endohedral and empty cage fullerenes present in carbon soot obtained by electric-arc synthesis using Gd2O3-doped graphite rods. The procedure developed utilizes successive precipitation with the Lewis acids CaCl2 and ZnCl2 followed by treatment with amino-functionalized silica gel. The structure of the product was identified by single-crystal X-ray diffraction.