Phosphorus–carbon bond formation in dimolybdenum alkyne complexes induced by oxidative addition of chlorodiphenylphosphine

Abstract

The reaction of [Mo₂(CO)₄(µ-R¹C₂R²)(η-C₅H₅)₂](R¹,R²= H, alkyl, or aryl) with PPh₂Cl proceeds via P–Cl bond cleavage and coupling of the diphenylphosphido group with the alkyne in one of three different ways depending on the nature of R¹ and R²; two of the resulting complexes, [Mo₂(µ-Cl){µ-Ph₂PC(H)CH}(CO)₂(η-C₅H₅)₂] and [Mo₂Cl₂(µ-PPh₂PCCHMe)(η-C₅H₅)₂] have been characterised by X-ray analysis.