Surface-mediated organometallic synthesis: Preparation of (Os sub 5 C(CO) sub 14 ) sup 2 minus and (Os sub 10 C(CO) sub 24 ) sup 2 minus on the basic magnesium oxide surface

Journal Article · Wed Oct 25 04:00:00 EDT 1989 · Journal of the American Chemical Society; (USA)

OSTI ID:6708708

Lamo, H H; Fung, A S; Tooley, P A; Puga, J; Krause, T R; Gates, B C ^[1]; Kelley, M J ^[2]

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1. Univ. of Delaware, Newark (USA)
2. E.I. du Pont de Nemours Co., Wilmington, DE (USA)

High-nuclearity osmium carbonyl clusters have been synthesized by simple means and in high yields on the surface of porous, high surface area magnesium oxide in the presence of CO and CO + H{sub 2}. Control of the product distributions was exerted by choice of the temperature, pressure, gas-phase composition, and metal compound precursor. (Os{sub 10}C(CO){sub 24}){sup 2{minus}} was prepared from (H{sub 2}OsCl{sub 6}) adsorbed on MgO treated in equimolar CO + H{sub 2} at 275{degree}C and 1 atm, and (Os{sub 5}C(CO){sub 14}){sup 2{minus}} was prepared from (Os{sub 3}(CO){sub 12}) adsorbed on MgO treated in CO at 275{degree}C and 1 atm. These syntheses are more efficient than the best known solution syntheses; the results suggest a more general applicability of surface-mediated synthesis.

• OSTI ID: 6708708
• Journal Information: Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 111:22; ISSN 0002-7863; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
ALKALINE EARTH METAL COMPOUNDS
CALCULATION METHODS
CARBONYLS
CHALCOGENIDES
COMPLEXES
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
INFORMATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OSMIUM COMPLEXES
OXIDES
OXYGEN COMPOUNDS
SURFACE TREATMENTS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES