19F NMR and EPR study of fluorinated buckminsterfullerene C60F58

A. M. Panich; A. I. Shames; H. Selig

doi:10.1016/S0022-3697(01)00185-8

¹⁹F NMR and EPR study of fluorinated buckminsterfullerene C₆₀F₅₈

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Solid state ¹⁹F NMR in the temperature range from 96 to 366 K and room temperature EPR studies of fluorinated buckminsterfullerene C₆₀F₅₈ have been carried out. The temperature dependence of the line width and the spin-lattice relaxation time show hindered molecular motion with the activation energy of ΔE_a = 1.9 kcal/mol. Neither phase transition nor random rotation of C₆₀F₅₈ have been obtained. The spin-lattice relaxation rate is strongly affected by the presence of paramagnetic centers, namely, dangling C-C bonds yielding localized unpaired electrons. Such broken bonds are caused by C-C bond rupture in a cage-opened structure of hyperfluorinated species.

Original language	English
Pages (from-to)	483-489
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	63
Issue number	3
DOIs	https://doi.org/10.1016/S0022-3697(01)00185-8
State	Published - 1 Mar 2002

Keywords

A. Fullerenes
D. Electron paramagnetic resonance (EPR)
D. Nuclear magnetic resonance (NMR)

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/S0022-3697(01)00185-8

Cite this

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title = "19F NMR and EPR study of fluorinated buckminsterfullerene C60F58",

abstract = "Solid state 19F NMR in the temperature range from 96 to 366 K and room temperature EPR studies of fluorinated buckminsterfullerene C60F58 have been carried out. The temperature dependence of the line width and the spin-lattice relaxation time show hindered molecular motion with the activation energy of ΔEa = 1.9 kcal/mol. Neither phase transition nor random rotation of C60F58 have been obtained. The spin-lattice relaxation rate is strongly affected by the presence of paramagnetic centers, namely, dangling C-C bonds yielding localized unpaired electrons. Such broken bonds are caused by C-C bond rupture in a cage-opened structure of hyperfluorinated species.",

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T1 - 19F NMR and EPR study of fluorinated buckminsterfullerene C60F58

AU - Panich, A. M.

AU - Shames, A. I.

AU - Selig, H.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - Solid state 19F NMR in the temperature range from 96 to 366 K and room temperature EPR studies of fluorinated buckminsterfullerene C60F58 have been carried out. The temperature dependence of the line width and the spin-lattice relaxation time show hindered molecular motion with the activation energy of ΔEa = 1.9 kcal/mol. Neither phase transition nor random rotation of C60F58 have been obtained. The spin-lattice relaxation rate is strongly affected by the presence of paramagnetic centers, namely, dangling C-C bonds yielding localized unpaired electrons. Such broken bonds are caused by C-C bond rupture in a cage-opened structure of hyperfluorinated species.

AB - Solid state 19F NMR in the temperature range from 96 to 366 K and room temperature EPR studies of fluorinated buckminsterfullerene C60F58 have been carried out. The temperature dependence of the line width and the spin-lattice relaxation time show hindered molecular motion with the activation energy of ΔEa = 1.9 kcal/mol. Neither phase transition nor random rotation of C60F58 have been obtained. The spin-lattice relaxation rate is strongly affected by the presence of paramagnetic centers, namely, dangling C-C bonds yielding localized unpaired electrons. Such broken bonds are caused by C-C bond rupture in a cage-opened structure of hyperfluorinated species.

KW - A. Fullerenes

KW - D. Electron paramagnetic resonance (EPR)

KW - D. Nuclear magnetic resonance (NMR)

UR - https://www.scopus.com/pages/publications/0036497414

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