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Comparative Raman study of the Ti complex Cp2Ti(eta2-C60) · C6H5CH3 and TixC60 films
Talyzin A.V.1, Jansson U.1, Usatov A.V.2, Burlakov V.V.2, Shur V.B.2, Novikov Y.N.2
1Department of Inorganic Chemistry
2A.N. Nesmeyanov Institute of Organoelement Compounds, Russain Academy of Sciences, Moscow, Russia
Выставление онлайн: 17 февраля 2002 г.

Raman spectra from the first Ti fullerene complex Cp2Ti(eta2-C60) · C6H5CH3 are presented. Compared to spectra of pure C60, the spectra of the Ti complex exhibit a number of new peaks due to the symmetry lowering for C60. The Ag(2) mode is downshifted by 12 cm-1 compared to C60, which corresponds to charge transfer of one electron per Ti-C60 bond. This value (6 cm-1 for one transferred electron) is identical to the downshift of the Ag(2) mode in alkali metal fullerides with ionic bonding. The spectra of Cp2Ti(eta2-C60) · C6H5CH3 were compared to the spectra of evaporated TixC60 films. The Ag(2) mode in Ti4C60 showed a downshift of about 25 cm-1 compared to pure C60, which corresponds to charge transfer of one electron per Ti atom, similar to the ionic alkali metal fullerides and different from a eta2-C60 type of bonding.
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