Novel rare gas interstitial fullerenes of C70

G. E. Gadd*, M. M. Elcombe, J. Dennis, S. Moricca, N. Webb, D. Cassidy, P. J. Evans

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The formation and characterisation of the rare gas interstitial compounds of argon, krypton and xenon with C70 are presented. The materials were produced by hot-isostatically pressing (HIPing) powdered samples of C70 at a temperature of 400°C and under a surrounding rare gas pressure between 170 and 200 MPa for ∼ 12 h. The materials were analysed by thermogravimetric analysis (TGA) and X-ray powder diffraction (XRD). It appears that under the HIP conditions used we were able to saturate all octahedral sites of the C70 lattice (experimental error 5-10%), giving the rare gas stoichiometric materials Ar1C70, Kr1C70 and Xe1C70. The C70 rare gas fullerenes were found to be more susceptible to loss of rare gas, compared with the corresponding C60 materials, although the relative stabilities followed the same pattern, with heavier intercalated rare gases being lost more slowly. The argon is lost very easily (within a few days) whereas the krypton and xenon C70 fullerenes were found to be stable at room temperature for several months, with some loss from the krypton fullerene.

Original languageEnglish
Pages (from-to)937-944
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Volume59
Issue number6-7
DOIs
Publication statusPublished - Jun 1998
Externally publishedYes

Keywords

  • Formation
  • Properties
  • Rare gas interstitial fullerenes

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