Rhenium subcarbonyls on magnesium oxide. Identification of the surface oxo and hydroxo ligands by infrared spectroscopy

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00037a016· OSTI ID:5712887

Papile, C J; Gates, B C ^[1]

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1. Univ. of Delaware, Newark, DE (United States)

Rhenium subcarbonyls on MgO powder were prepared by adsorption and decomposition of [Re[sub 2](CO)[sub 10]] and characterized by infrared spectroscopy. MgO samples were treated at various temperatures to give surfaces ranging from those that were virtually fully dehydroxylated to those that were highly hydroxylated; methoxylated surfaces were also prepared by treatment of MgO with methanol. The rhenium subcarbonyls on the surface have distinctive carbonyl infrared spectra that are very similar to those of molecular analogues; the spectra allow identification of the surface ligands bonded to the rhenium as O[sup 2[minus]] on the highly dehydroxylated surface, OH[sup [minus]] on the hydroxylated surface, and CH[sub 3]O[sup [minus]] on the methoxylated surface. A family of surface species is identified, including Re(CO)[sub 3]OMg[sub 3], Re(CO)[sub 3]HOMg[sub 3], Re(CO)[sub 3]HOMg[sub 2]OMg, and Re(CO)[sub 3]CH[sub 3]OMg[sub 3], where the braces refer to the surface ligands terminating the MgO. 20 refs., 3 figs., 3 tabs.

• DOE Contract Number: FG02-87ER13790
• OSTI ID: 5712887
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 8:1; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
CATALYST SUPPORTS
CHALCOGENIDES
COMPLEXES
DATA
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
INFRARED SPECTRA
LIGANDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METHANOL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RHENIUM COMPLEXES
SPECTRA
TRANSITION ELEMENT COMPLEXES