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Crystalline functionalized endohedral C60 metallofullerides

Author

Listed:
  • Ayano Nakagawa

    (Nagoya University)

  • Makiko Nishino

    (Nagoya University)

  • Hiroyuki Niwa

    (Nagoya University)

  • Katsuma Ishino

    (Nagoya University)

  • Zhiyong Wang

    (Nagoya University)

  • Haruka Omachi

    (Nagoya University)

  • Ko Furukawa

    (Niigata University)

  • Takahisa Yamaguchi

    (Kyoto University)

  • Tatsuhisa Kato

    (Kyoto University)

  • Shunji Bandow

    (Meijo University)

  • Jeremy Rio

    (CNRS UMR6502)

  • Chris Ewels

    (CNRS UMR6502)

  • Shinobu Aoyagi

    (Nagoya City University)

  • Hisanori Shinohara

    (Nagoya University)

Abstract

Endohedral metallofullerenes have been extensively studied since the first experimental observation of La@C60 in a laser-vaporized supersonic beam in 1985. However, most of these studies have focused on metallofullerenes larger than C60 such as (metal)@C82, and there are no reported purified C60-based monomeric metallofullerenes, except for [Li@C60]+(SbCl6)− salt. Pure (metal)@C60 compounds have not been obtained because of their extremely high chemical reactivity. One route to their stabilization is through chemical functionalization. Here we report the isolation, structural determination and electromagnetic properties of functionalized crystalline C60-based metallofullerenes Gd@C60(CF3)5 and La@C60(CF3)5. Synchrotron X-ray single-crystal diffraction reveals that La and Gd atoms are indeed encapsulated in the Ih-C60 fullerene. The HOMO-LUMO gaps of Gd@C60 and La@C60 are significantly widened by an order of magnitude with addition of CF3 groups. Magnetic measurements show the presence of a weak antiferromagnetic coupling in Gd@C60(CF3)3 crystals at low temperatures.

Suggested Citation

  • Ayano Nakagawa & Makiko Nishino & Hiroyuki Niwa & Katsuma Ishino & Zhiyong Wang & Haruka Omachi & Ko Furukawa & Takahisa Yamaguchi & Tatsuhisa Kato & Shunji Bandow & Jeremy Rio & Chris Ewels & Shinobu, 2018. "Crystalline functionalized endohedral C60 metallofullerides," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05496-8
    DOI: 10.1038/s41467-018-05496-8
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