CO ON NI(100) - OBSERVATION OF A HIGH-FREQUENCY IR BAND AT 2200CM(-1)

Authors
GROSSMAN A ERLEY W IBACH H
Citation
A. Grossman et al., CO ON NI(100) - OBSERVATION OF A HIGH-FREQUENCY IR BAND AT 2200CM(-1), Surface science, 355(1-3), 1996, pp. 331-334
Citations number
10
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
355
Issue
1-3
Year of publication
1996
Pages
331 - 334
Database
ISI
SICI code
0039-6028(1996)355:1-3<331:CON-OO>2.0.ZU;2-V
Abstract
The infrared spectrum of CO adsorbed on Ni(100) displays an additional high-frequency band at about 2200 cm(-1) co-existing with the IR band s due to terminal and bridging CO at temperatures below 130 K. The 220 0 cm(-1) band is attributed to the internal stretching mode of CO mole cules weakly bonded to those Ni surface atoms which are charged due to bonding to subsurface oxygen. The considerable blue-shift of 70 cm(-1 ) with respect to the vibration frequency of free CO is assumed to ari se from a Stark effect.