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ASSIGNMENTS OF THE INFRARED AND RAMAN-SPECTRA OF THE OS-2(MU(2)-CHCH3) GROUP OF [(MU(2)-CHCH3)OS-2(CO)8] AND OF ITS D(1) AND D(4) ISOTOPOLOGUES AS MODELS FOR THE SPECTRA OF SUCH ETHYLIDENE GROUPS ON METAL-SURFACES
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UNSPECIFIED. (1994) ASSIGNMENTS OF THE INFRARED AND RAMAN-SPECTRA OF THE OS-2(MU(2)-CHCH3) GROUP OF [(MU(2)-CHCH3)OS-2(CO)8] AND OF ITS D(1) AND D(4) ISOTOPOLOGUES AS MODELS FOR THE SPECTRA OF SUCH ETHYLIDENE GROUPS ON METAL-SURFACES. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 116 (7). pp. 3058-3062. ISSN 0002-7863
Full text not available from this repository.Abstract
Procedures are described for the preparation of the d(1) (CDCH3) and d(4) isotopologues of [(mu(2)-CHCH3)-Os-2(CO)(8)] (1) Infrared and Raman spectra for the d(0), d(1), and d(4) molecules are analyzed, in comparison with those of CH3CHCl2 and its deuterium-containing species, in order to characterize the vibrational spectrum of an ethylidene group bonded to metal atoms. Taking into account the effects of the metal-surface selection rule for species adsorbed on metal surfaces, a comparison is made between the interpreted spectra of 1 and a number of vibrational spectra in the literature which may reflect the presence of ethylidene groups. These include electron energy loss spectra (EELS) near 300 K from ethene adsorbed on Pt(111) with coadsorbed potassium or oxygen, and a vibrational inelastic tunneling spectrum (IETS) obtained by hydrogen reduction of CO adsorbed on Rh/Al2O3. Taking into account the limited resolution of the EELS data, the spectra on Pt(111)/K and Pt(111)/O can reasonably be attributed to the ethylidene surface species. A more definitive structural assignment requires higher resolution spectra from the adsorbed species. The agreement between the infrared spectrum of 1 and the IETS spectrum on Rh/Al2O3 is particularly good.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Journal or Publication Title: | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY |
| Publisher: | AMER CHEMICAL SOC |
| ISSN: | 0002-7863 |
| Date: | 6 April 1994 |
| Volume: | 116 |
| Number: | 7 |
| Number of Pages: | 5 |
| Page Range: | pp. 3058-3062 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/20735 |
Data sourced from Thomson Reuters' Web of Knowledge
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