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Excitation spectra of polymerized fullerides as RbC60, Na4C60 and pressurized C60 are studied by inelastic neutron scattering and Raman spectroscopy in view of differences in the interfullerene bondin...
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We have studied the stable geometry of monoclinic Na2RbC60 polymer by means of local density functional (LDF) calculations. Our optimised geometry shows an Rwp value comparable with the Rietveld model...

Fulleride polymerisation at ambient and elevated pressure

AIP Conf. Proc. -- August 11, 1998 -- Volume 442, pp. 327-330
The 12th international winterschool on electronic properties of novel materials: progress in molecular nanostructures; doi:10.1063/1.56470

Issue Date: 11 August 1998

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S. Margadonna,1 C. M. Brown,1,2 A. Lappas,1 K. Kordatos,1 K. Tanigaki,3 and K. Prassides1
1School of Chemistry, Physics and Environmental Studies, University of Sussex, Brighton BN1 9QJ, United Kingdom
2Institute Laue Langevin, F-38042 Grenoble, France
3Fundamental Research Laboratories, NEC Corporation, Tsukuba 305, Japan
The polymerisation of ternary and quaternary sodium fullerides, Na2Rb1−xCsxC60 (0<=x<=1) is studied by neutron and synchrotron X-ray powder diffraction at both ambient and elevated pressure. All Na2Rb1−xCsxC60 (0<=x<=1) salts, except Na2CsC60, polymerise at ambient pressure upon slow cooling. Na2CsC60 polymerises only upon application of pressure, the cubic phase surviving to ~0.84 GPa. The monomer-->polymer phase transition in Na2RbC60 is followed in detail for both slow cooling and heating procedures, as well as a function of time at low temperature. High resolution powder neutron diffraction confirms the monoclinic (P21/a) structure of Na2RbC60 at 2.5 K and allows the determination of the interball bridging C-C bond distance as 1.70(7) Å. ©1998 American Institute of Physics.
Permalink: http://link.aip.org/link/?APCPCS/442/327/1
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KEYWORDS and PACS

Keywords
PACS
  • 81.05.Tp
    Materials science Specific materials: fabrication, treatment, testing, and analysis Fullerenes and related materials; diamonds, graphite
  • 82.35.+t
    Physical chemistry Polymer reactions and polymerization
  • 81.30.Hd
    Materials science Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Constant-composition solid-solid phase transformations: polymorphic, massive, and orderdisorder
  • YEAR: 1998

PUBLICATION DATA

ISSN:
0094-243X (print)  
Publisher:
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