Abstract
Adsorption of ethene, propene and 3,3,3-trifluoropropene on Mo(100) surfaces modified by 0.9-1.1 ML of oxygen was studied by UPS. Ethene and propene molecularly adsorb to oxygen modified Mo(100). The binding energy shift in the π-orbital of both molecules is consistent with bonding by π-electron donation to surface Lewis acid sites. Molecular adsorption of CF3CHCH2 produces a π-orbital shift to lower binding energy. This observation along with the calculated electronic structure of CF3CHCH2 is interpreted as evidence for a surface chemical bond dominated by backdonation of electrons from the surface to unoccupied π*-orbitals on the adsorbate.
Original language | English (US) |
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Pages (from-to) | 127-134 |
Number of pages | 8 |
Journal | Surface Science |
Volume | 239 |
Issue number | 1-2 |
DOIs | |
State | Published - Dec 1 1990 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry