Preparation and structure of ((Me/sub 3/CO)/sub 3/W identical with C-Ru(CO)/sub 2/(Cp)), a heteronuclear,. mu. /sub 2/-carbide complex
Carbon monoxide dissociates to reactive carbide and oxide fragments on many catalytically active metal surfaces. Dissociation is believed to be the first step in the reductive hydrogenation of CO via the Fischer-Tropsch synthesis and related reactions. The remarkable reactivity of these surface carbides is probably due to the fact that they are highly exposed, with a low coordination number. Most organometallic carbide complexes contain carbon atoms surrounded by at least five metal atoms. However, (Fe/sub 4/C(CO)/sub 12/)/sup 2 -/ and related tetranuclear carbide clusters studied by Bradley, Muetterties, and Shriver show high reactivity at the carbide ligand. The chemistry of (Fe/sub 3/(CCO)(CO)/sub 9/)/sup 2 -/ suggests the intermediacy of a very reactive Fe/sub 3/C cluster. The sole fully characterized example of a two-coordinate metal carbide complex is (Fe/sub 2/(..mu../sub 2/-C)(5,10,15,20-tetraphenylporphyrinate)/sub 2/). A dinuclear bicarbide complex, (Ta/sub 2/(..mu../sub 2/-C/sub 2/)/OSi(CMe/sub 3/)/sub 3///sub 6/), has recently been reported by Wolczanski and co-workers. They report here the first heterodinuclear complex with a two-coordinate carbide ligand, ((Me/sub 3/CO)/sub 3/W identical to C-Ru(CO)/sub 2/(Cp)).
- Research Organization:
- Univ. of Kentucky, Lexington
- OSTI ID:
- 6085976
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:15; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBIDES
CARBON COMPOUNDS
CARBONYLS
CHEMICAL PREPARATION
COHERENT SCATTERING
COMPLEXES
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LIGANDS
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPLEXES
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN CARBIDES
TUNGSTEN COMPOUNDS
X-RAY DIFFRACTION