CH Vibration Softening and the Dehydrogenation of Hydrocarbon Molecules on Ni(111) and Pt(111)

作者：J. E. Demuth, H. Ibach, Sieghart Lehwald · 发表于：Physical Review Letters · 年份：1978 · DOI：10.1103/physrevlett.40.1044 · 被引用次数：251 · 研究领域：Advanced Chemical Physics Studies、Catalysis and Oxidation Reactions、Electron and X-Ray Spectroscopy Techniques

High-resolution electron energy-loss measurements of ethylene on Ni(111) and cyclohexane on Ni(111) and Pt(111) show an extra CH stretching vibration---not found in free molecules or organometallic compounds---which is strongly broadened and shifted to lower frequencies relative to another, more typical CH stretching vibration. This softened and broadened CH frequency is attributed to a new electronic interaction with the surface which we relate to the mechanism of hydrocarbon dehydrogenation.