13C NMR relaxation time of fullerene as a function of magnetic field
| Autor: | Piotr Tekely, J.B. Robert, Daniel Canet |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Carbon disulfide Fullerene Spin–lattice relaxation General Physics and Astronomy Nuclear magnetic resonance spectroscopy Carbon-13 NMR Molecular physics Magnetic field chemistry.chemical_compound Nuclear magnetic resonance chemistry Physical and Theoretical Chemistry Anisotropy Inorganic compound |
| Zdroj: | Chemical Physics Letters. 212:483-486 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/0009-2614(93)87233-s |
| Popis: | The 13 C spin—lattice relaxation time of C 60 in carbon disulfide was measured at four different frequencies, 50.288, 75.432, 100.576 and 150.864 MHz. A good linear fit of T −1 as a function of B 2 0 is obtained. The small value of the intercept T −1 1 at B = 0 equal to 3.51 × 10 −4 s −1 shows that the chemical shift anisotropy is the dominant term to the relaxation rate over all the frequency range considered. The correlation time τ c (16 ps) obtained shows that the C 60 motion may be described through the Stokes—Einstein—Debye model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|