Physics – Condensed Matter
Scientific paper
1995-04-26
Physics
Condensed Matter
4 pages, revtex file, figures available upon request from lukyanc@lpm.univ-montp2.fr
Scientific paper
10.1103/PhysRevB.53.7535
Solid state high resolution $^{13}C$ NMR has been used to investigate the physical properties of pristine $C_{60}$ after intercalation with molecular oxygen. By studying the dipolar and hyperfine interactions between Curie type paramagnetic oxygen molecules and $^{13}C$ nuclei we have shown that neither chemical bonding nor charge transfer results from the intercalation. The $O_2$ molecules diffuse inside the solid $C_{60}$ and occupy the octahedral sites of the fcc crystal lattice. The presence of oxygen does not affect the fast thermal reorientation of the nearest $C_{60}$ molecules. Using Magic Angle Spinning we were able to separate the dipolar and hyperfine contributions to $^{13}C$ NMR spectra, corresponding to buckyballs adjacent to various numbers of oxygen molecules.
Belahmer Z.
Bernier P.
Firlej L.
Luk'yanchuk I.
Ribet M.
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