Abstract
Studies of ethylene adsorption on Cu(110) by temperature programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS) are presented. Ethylene coordinates weakly to Cu(110) and desorbs molecularly intact below 225 K. RAIRS spectra at 100 K show two strong modes: one, the C-C stretching mode, at 1522 cm-1 and the other, the CH2 scissors mode, at 1261 cm-1. No CH2 wagging mode is observed. These data indicate that the ethylene retains most of its π character upon adsorption, but unlike on other transition-metal surfaces binds with its molecular plane perpendicular to the surface and its C-C bond tilted away from the surface plane.
Original language | English |
---|---|
Pages (from-to) | L89-L94 |
Journal | Surface Science |
Volume | 277 |
Issue number | 3 |
DOIs | |
State | Published - Oct 20 1992 |
Externally published | Yes |
Funding
Financial support for this research was provided in part by grantsf rom the National Science Foundation (CHE-90-12560a nd CHE-90-22077).