Olefins five-coordinate complexes, reactivity

D. Reactivity of Five-Coordinate [M (Ai-ligand)(olefin)] Complexes (M = Rh, Ir)... 

Mimoun has given an alternative possibility, suggesting the formation of peroxo metallacyclic adducts following complexafion of the olefin to the metal [171,475]. The reaction sequence (Fig. 1.13) involves a reactive species denoted as Ln-Mo, a Mo(VI) ion with a set of alkoxy ligands. The reaction starts by formation of an alkylperoxo Mo complex by ligand exchange of an alkylperoxide with an alcohol. This is followed by complexafion of the olefin by a coordination bond. A subsequent peroxy metallation of the olefin produces a five-membered... 

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