Resonance Electron Scattering Investigations of Adsorbed Hydrocarbons: Benzene, Pyridine and Cyclohexane on Pd(111)

摘要

Energy-dependent structure and mode selectivity are investigated for inelastic electron scattering from the vibrational modes of benzene, pyridine, and cyclohexane adsorbed on Pd(111). The results indicate resonance behavior for the totally symmetric C-H stretching modes of adsorbed pyridine and benzene nearl 2.5 eV incident energy. No such behavior is detected for adsorbed cyclohexane. The results are consistent with the observation of higher energy resonances for gas-phase benzene and pyridine. Keywords: Palladium (111) Surface; chemisorption; vibrational spectroscopy; electron energy loss spectroscopy.