Methane in an Open-Cage [60]Fullerene

An endohedral methane complex of a fullerene derivative is first synthesized by insertion of a methane molecule through the opening of an open-cage C60 derivative. The trapped methane is confirmed by NMR spectroscopy and mass spectrometry. Both methane carbon and protons show remarkable upfield shif...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2009-05, Vol.131 (18), p.6338-6339
Main Authors: Whitener, Keith E, Cross, R. James, Saunders, Martin, Iwamatsu, Sho-ichi, Murata, Shizuaki, Mizorogi, Naomi, Nagase, Shigeru
Format: Article
Language:English
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Summary:An endohedral methane complex of a fullerene derivative is first synthesized by insertion of a methane molecule through the opening of an open-cage C60 derivative. The trapped methane is confirmed by NMR spectroscopy and mass spectrometry. Both methane carbon and protons show remarkable upfield shifts in NMR, characteristic of a chemical species in a fullerene cage. CH4 protons appear as one equivalent signal in the 1H NMR spectrum, suggesting that even methane can rotate in a C60 cage.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja901383r