Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer

V. C. Long, J. L. Musfeldt, K. Kamarás, Y. Iwasa, W. E. Mayo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report high-resolution far-infrared transmission measurements on 2D rhombohedral and 1D orthorhombic high-pressure-high-temperature C60 polymers and the doubly-bonded dimer, between 20 and 650 cm-1. Symmetry-breaking of the linked C60 balls is evident in splittings and activations of intramolecular modes. We find overall good agreement with predictions of group theory for the reduced-symmetry point groups of the R-polymer and Dimer. An overabundance of activated modes between 500 and 600 cm-1 in the O-polymer makes a confirmation of its symmetry more tentative. In all three structures, a strong multiplet near 610 cm-1 suggests a very large splitting or frequency shift of an Ih C60 fundamental mode, implying that a weak perturbation model cannot adequately describe the vibrational properties of bonded fullerenes.

Original languageEnglish
Title of host publicationFerroelectrics
EditorsK. Kamaras
Pages135-144
Number of pages10
Volume249
Edition1-2
Publication statusPublished - 2001
Event4th International Conference on Low Energy Electrodynamics in Solids (LESS-4) - Pecs, Hungary
Duration: Jun 21 1999Jun 25 1999

Other

Other4th International Conference on Low Energy Electrodynamics in Solids (LESS-4)
CountryHungary
CityPecs
Period6/21/996/25/99

Fingerprint

Dimers
Polymers
dimers
Infrared radiation
polymers
Fullerenes
Point groups
Group theory
Infrared transmission
group theory
Crystal symmetry
symmetry
Temperature
frequency shift
fullerenes
balls
broken symmetry
Chemical activation
fine structure
activation

Keywords

  • Far infrared
  • Fullerenes
  • Symmetry-breaking
  • Vibrations

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Long, V. C., Musfeldt, J. L., Kamarás, K., Iwasa, Y., & Mayo, W. E. (2001). Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer. In K. Kamaras (Ed.), Ferroelectrics (1-2 ed., Vol. 249, pp. 135-144)

Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer. / Long, V. C.; Musfeldt, J. L.; Kamarás, K.; Iwasa, Y.; Mayo, W. E.

Ferroelectrics. ed. / K. Kamaras. Vol. 249 1-2. ed. 2001. p. 135-144.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Long, VC, Musfeldt, JL, Kamarás, K, Iwasa, Y & Mayo, WE 2001, Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer. in K Kamaras (ed.), Ferroelectrics. 1-2 edn, vol. 249, pp. 135-144, 4th International Conference on Low Energy Electrodynamics in Solids (LESS-4), Pecs, Hungary, 6/21/99.
Long VC, Musfeldt JL, Kamarás K, Iwasa Y, Mayo WE. Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer. In Kamaras K, editor, Ferroelectrics. 1-2 ed. Vol. 249. 2001. p. 135-144
Long, V. C. ; Musfeldt, J. L. ; Kamarás, K. ; Iwasa, Y. ; Mayo, W. E. / Far-infrared investigation of C60 high-pressure-high-temperature polymers and dimer. Ferroelectrics. editor / K. Kamaras. Vol. 249 1-2. ed. 2001. pp. 135-144
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AB - We report high-resolution far-infrared transmission measurements on 2D rhombohedral and 1D orthorhombic high-pressure-high-temperature C60 polymers and the doubly-bonded dimer, between 20 and 650 cm-1. Symmetry-breaking of the linked C60 balls is evident in splittings and activations of intramolecular modes. We find overall good agreement with predictions of group theory for the reduced-symmetry point groups of the R-polymer and Dimer. An overabundance of activated modes between 500 and 600 cm-1 in the O-polymer makes a confirmation of its symmetry more tentative. In all three structures, a strong multiplet near 610 cm-1 suggests a very large splitting or frequency shift of an Ih C60 fundamental mode, implying that a weak perturbation model cannot adequately describe the vibrational properties of bonded fullerenes.

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