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Novel method of synthesis of C60F48 with improved yield and selectivity |
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| Authors: | A.V. Kepman V.F. Sukhoverkhov C. Labrugere N.S. Chilingarov |
| Affiliation: | a Chemistry Department, M.V. Lomonosov Moscow State University, Physical Chemistry Division, Leninskije Gory, 119992 Moscow, Russia b Kurnakov Institute of General and Inorganic Chemistry RAS, 117907 Moscow, Russia c Institut de Chimie de la Matiere Condensee de Bordeaux (ICMCB-CNRS), University Bordeaux 1, 87 Avenue du Dr. A. Schweitzer, 33608 Pessac Cedex, France |
| Abstract: | A novel two-stage method of preparation of C60F48 with 96% purity and 80% yield is reported. A C60 embedded into a MnF2 matrix is reacted with molecular fluorine under dynamic conditions, i.e. in flow of fluorine gas and with sublimation of volatile products, which results in formation of C60F34-C60F38 mixtures with >90% yield. Subsequent fluorination of the mixture thus obtained in the closed reactor at elevated pressure directly leads to the final product. C60F48 thus synthesized has been characterized by means of EI-MS, MALDI-MS, IR-spectroscopy and X-ray photoelectron spectroscopy (XPS). The problems of fullerene burning and degradation in the fluorine atmosphere are discussed. |
| Keywords: | Selective fluorination Fluorofullerenes Molecular fluorine C60F48 |
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