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Dimanganese decacarbonyl, [3] which has the chemical formula Mn 2 (CO) 10, is a binary bimetallic carbonyl complex centered around the first row transition metal manganese. The first reported synthesis of Mn 2 (CO) 10 was in 1954 at Linde Air Products Company and was performed by Brimm, Lynch, and Sesny. [ 4 ]
It is a bright orange solid that is a precursor to other manganese complexes. The compound is prepared by treatment of dimanganese decacarbonyl with bromine: [1] Mn 2 (CO) 10 + Br 2 → 2 BrMn(CO) 5. The complex undergoes substitution by a variety of donor ligands (L), e.g. to give derivatives of the type BrMn(CO) 3 L 2.
Metal carbonyls are used in a number of industrially important carbonylation reactions. In the oxo process, an alkene, hydrogen gas, and carbon monoxide react together with a catalyst (such as dicobalt octacarbonyl) to give aldehydes. Illustrative is the production of butyraldehyde from propylene: CH 3 CH=CH 2 + H 2 + CO → CH 3 CH 2 CH 2 CHO
In chemistry, carbonylation refers to reactions that introduce carbon monoxide (CO) into organic and inorganic substrates. Carbon monoxide is abundantly available and conveniently reactive, so it is widely used as a reactant in industrial chemistry. [ 1 ]
Dicobalt octacarbonyl is an organocobalt compound with composition Co 2 (CO) 8.This metal carbonyl is used as a reagent and catalyst in organometallic chemistry and organic synthesis, and is central to much known organocobalt chemistry.
Dicobalt octacarbonyl is produced by the carbonylation of cobalt salts. It and its phosphine derivatives are among the most widely used organocobalt compounds. Heating Co 2 (CO) 8 gives Co 4 (CO) 12. Very elaborate cobalt-carbonyl clusters have been prepared starting from these complexes.
A common transformation involves the conversion of aldehydes to alkanes. [5]R C H O → RH + CO. Decarbonylation can be catalyzed by soluble metal complexes. [6] [5] These reactions proceed via the intermediacy of metal acyl hydrides.
The reaction is a strongly acid-catalyzed carbonylation and typically proceeds under pressures of CO and at elevated temperatures. The commercially important synthesis of pivalic acid from isobutenes operates near 50 °C and 50 kPa (50 atm).