Abstract

High resolution electron energy loss spectroscopy (HREELS) has been used to record vibrational spectra of intermediate ethoxides, non-deuterated and deuterated, adsorbed on Mo(110). The vibrational shifts induced by deuteration can not be interpreted within the harmonic approximation and therefore strictly not within the normal mode concept. It is demonstrated how ab initio molecular orbital calculations of small ethoxide-metal clusters give results in agreement with experimentally observed vibrational spectra.

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