Reaction of acetyl complexes with HMR3 (M = Si, Sn). Mechanism of acetaldehyde formation

Article abstract of DOI:10.1021/om00135a013

The thermal reaction of the acyl complexes CH₃C(O)M(CO)_xL (M = Co, Mn; L = PPh₃) with HM′R₃ (M′ = Si, Sn; R = Bu, Ph) results in the formation of acetaldehyde and R₃M′M(CO)_xL. The rate law for the reaction is consistent with a pathway involving initial CO dissociation from CH₃C(O)M(CO)_xL, oxidative addition of the H-M′ bond, and reductive elimination of acetaldehyde. With HSnR₃ the rate-determining step is CO dissociation from CH₃C(O)M(CO)_xL. In the case of HSiR₃ the rate-determining step is oxidative addition of the H-Si bond.