Eu@C72: Computed comparable populations of two non-IPR isomers

Zdeněk Slanina, Filip Uhlík, Shigeru Nagase, Takeshi Akasaka, Ludwik Adamowicz, Xing Lu

Research output: Contribution to journalArticle

8 Scopus citations


Relative concentrations of six isomeric Eu@C72—one based on the IPR C72 cage (i.e., obeying the isolated-pentagon rule, IPR), two cages with a pentagon–pentagon junction (symmetries C2 and C2v), a cage with one heptagon, a cage with two heptagons, and a cage with two pentagon–pentagon fusions—are DFT computed using the Gibbs energy in a broad temperature interval. It is shown that the two non-IPR isomers with one pentagon–pentagon junction prevail at any relevant temperature and exhibit comparable populations. The IPR-satisfying structure is disfavored by both energy and entropy.

Original languageEnglish (US)
Article number1053
Issue number7
StatePublished - Jul 1 2017


  • Metallofullerenes
  • Non-IPR fullerenes
  • Relative populations of isomers

ASJC Scopus subject areas

  • Medicine(all)
  • Organic Chemistry

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    Slanina, Z., Uhlík, F., Nagase, S., Akasaka, T., Adamowicz, L., & Lu, X. (2017). Eu@C72: Computed comparable populations of two non-IPR isomers. Molecules, 22(7), [1053].