Ru sub 3 (CO) sub 12 and Mo(CO) sub 6 adsorbed on Ru(001) and Au/Ru: An infrared reflection-absorption study

Journal Article · Sun Dec 31 23:00:00 EST 1989 · Journal of Electron Spectroscopy and Related Phenomena; (Netherlands)

DOI:https://doi.org/10.1016/0368-2048(90)80240-B· OSTI ID:7291968

Malik, I J; Hrbek, J ^[1]

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1. Brookhaven National Lab., Upton, NY (United States)

The authors obtained infrared reflection absorption (IRAS) and thermal desorption spectroscopy (TDS) data for Ru{sub 3}(CO){sub 12}/Ru(001) and Mo(CO){sub 6}/Au/Ru systems for metal carbonyl coverages between submonolayer and approximately 20 monolayers. They characterized the C-O stretching mode of both systems (4cm{sup {minus}1}FWHM) and a deformation mode of Mo(CO){sub 6} at 608cm{sup {minus}1} (1 cm{sup {minus}1}FWHM). Both IRAS and TDS data suggest adsorption and desorption of metal carbonyls as molecular species with a preferential orientation in the overlayers. The IR intensity of the C-O stretch per a C-O bond projected onto the surface normal is approximately twice (five times) larger for Ru{sub 3}(CO){sub 12} (Mo(CO){sub 6}) at submonolayer coverages than for CO/Ru(001) at {theta}{sub CO}=0.68.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7291968
• Journal Information: Journal of Electron Spectroscopy and Related Phenomena; (Netherlands), Journal Name: Journal of Electron Spectroscopy and Related Phenomena; (Netherlands) Vol. 54/55; ISSN 0368-2048; ISSN JESRA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ADSORPTION
ALLOYS
CARBONYLS
DATA
DESORPTION
ELEMENTS
EXPERIMENTAL DATA
GOLD ALLOYS
INFORMATION
INFRARED SPECTRA
METALS
MILLER INDICES
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
OPTICAL REFLECTION
OSCILLATION MODES
PLATINUM METAL ALLOYS
PLATINUM METALS
REFLECTION
REFRACTORY METAL COMPOUNDS
RUTHENIUM
RUTHENIUM ALLOYS
RUTHENIUM COMPOUNDS
SORPTION
SPECTRA
SPECTROSCOPY
SURFACES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS