Isolation and spectroscopic characterisation of C60F17CF2CF3 and isomers of C60F17CF3; insertion of : CF2 into fluorofullerene C-F bonds
Boltalina, O. V., Hitchcock, P. B., Troshin, P. A., Street, J. M. and Taylor, R. (2000) Isolation and spectroscopic characterisation of C60F17CF2CF3 and isomers of C60F17CF3; insertion of : CF2 into fluorofullerene C-F bonds. Journal of the Chemical Society, Perkin Transactions 2, (12), 2410-2414. (doi: 10.1039/b006890j).
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The perfluoroalkylfluorofullerenes C60F17CF2CF3 (C-s) and three isomers of C60F17CF3 [C-s (major, 65%), enantiomeric C-1 pair (minor, 35%)] have been separated by HPLC from the many products obtained by fluorination of fullerene by K2PtF6 at ca. 465 epsilon degreesC. They have been characterised by F-19 NMR spectroscopy, and for the trifluoromethyl compound, by single crystal X-ray structure determination. The trifluoromethyl compound shows either extremely weak or no resonances for the CF3 group in the F-19 NMR spectrum, which led to an earlier misidentification of the major isomer in this compound as a CF2 derivative. Isolation of these compounds indicates that trifluoromethyl compounds are formed under these conditions by insertion of :CF2 groups (from fragmentation of other fluorinated fullerene cages) into C-F bonds.
|Keywords:||cyclopropane, fulleroids, c-60|
Q Science > QD Chemistry
|Divisions:||University Structure - Pre August 2011 > School of Chemistry
|Date Deposited:||21 Dec 2005|
|Last Modified:||01 Jun 2011 16:07|
|Contributors:||Boltalina, O. V. (Author)
Hitchcock, P. B. (Author)
Troshin, P. A. (Author)
Street, J. M. (Author)
Taylor, R. (Author)
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