Mu@C70: Monitoring the dynamics of fullerenes from inside the cage

K. Prassides, T. J.S. Dennis, C. Christides, E. Roduner, H. W. Kroto, R. Taylor, D. R.M. Walton

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Atomic muonium (Mu, the light isotope of hydrogen) is easily encapsulated inside fullerene cages and acts as a highly sensitive microscopic probe of both the fullerene's rotational dynamics and the anisotropy in its electronic distribution. Zero-field muon spin relaxation studies of Mu@C70 as a function of temperature reveal the appearance of the Mu triplet precession upon orientational ordering of the fullerene at 270 K, signaling the presence of an axially symmetric hyperfine interaction. A small 2pz admixture is found in the ground-state wave function of Mu@C70; as a result, the electron density reproduces perfectly the internal shape of the fullerene skeleton, including the small "pinching" in the equator.

Original languageEnglish
Pages (from-to)10600-10602
Number of pages3
JournalJournal of physical chemistry
Issue number26
Publication statusPublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry


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