The isotope effect on the Raman spectrum of molecular C60
- 27 September 1994
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 70 (3) , 651-659
- https://doi.org/10.1080/01418639408240239
Abstract
High-resolution Raman spectra of solutions of C60 in CS2 reveal the presence of 13C isotopes in the C60 molecules. The observed frequency shifts for the high-energy Ag(2) totally symmetric mode can be explained in terms of first-order non-degenerate perturbation theory. Information on the frequencies of modes close to Ag(2) is obtained by studying the conditions under which a non-degenerate perturbation expansion is valid. This is done with the help of non-perturbative calculations based on first-principles and empirical vibrational models.Keywords
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