Identification of Binuclear Acyl Complexes as Intermediates in the CO-induced Conversion of [(η^5-C_5H_5)Co(CO)(Me)]_2 into Acetone, and [(η^5-C_5H_5)Co(CO)(Et)]_2 into Pentan-3-one

Abstract

Studies of the carbonylation of [(η^5-C_5H_5)Co(CO)(R)]_2(R = Me, Et) at temperatures below ambient have revealed that these complexes may be converted into ketones via binuclear diacyl complexes [(η^5-C_5H_5)Co(CO)(COR)]_2; the postulated mechanistic pathway circumvents the earlier-identified intermediate (η^5-C_5H_5)Co(CO)R_2, and involves alkyl transfer from a Co^(II) acyl complex as a critical step.

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