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- Title
Pressure-induced dimerization of C[sub 60] fullerene.
- Authors
Davydov, V. A.; Kashevarova, L. S.; Rakhmanina, A. V.; Senyavin, V. M.; Agafonov, V.; Ceolin, R.; Szwarc, H.
- Abstract
The dimerization of C[sub 60] fullerene under conditions of quasi-hydrostatic compression at temperatures above 293 K is investigated by IR spectroscopy, Raman scattering (RS) spectroscopy, and x-ray diffraction. The measured dimer (C[sub 60])[sub 2] content in the products of the polymerization of fullerite as a function of the pressure, temperature, and treatment time shows that dimerization occurs even at room temperature in the entire pressure range above ∼1.0 GPa. However, at least at temperatures above 400 K dimerization does not result in the formation of a dimer phase as a stable modification of the system, since the dimer is an intermediate product of the transformation. It is shown that increasing the holding time at 423 K decreases the content of the dimer fraction in the samples and results in the formation of linear (at 1.5 GPa) and two-dimensional (at 6.0 GPa) polymers, which are structure-forming elements of the orthorhombic and rhombohedral polymerized phases. © 1998 American Institute of Physics.
- Subjects
CHEMICAL reactions; FULLERENES
- Publication
JETP Letters, 1998, Vol 68, Issue 12, p928
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.567957