Observation of an unusually low CO stretching frequency: CO chemisorption on a Mo(100) surface
✍ Scribed by F. Zaera; E. Kollin; J.L. Gland
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 288 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
An unusual CO chemisorption srare has been idenrified on the Mo(100) surface using high-resolution electron energy loss spectroscopy. X-ray photoemission spectroscopy. and thermal desorplion spectroscopy. This slak. which exists at low coverages and kmperatures below 230 K. is characterized by IWO CO sw-xching rrequencies a~ 1065 and 1235 cm-'. the Iowes reported for any CO chemisorption system to dare. We propose a benr adsorption geomeuy for Ihis unique CO slare that is the precursor for molecular dissociation on the Mo(100) surface bepinning al 230 K. Al higher coverages additional CO molecules bond perpendicularly IO the melal surface with srrelching frequencies near 2100 cm-'.