Cleavage of MC (M = Mo or W) bonds in the formation of the complexes [Fe2M(µ-C2R)(CO)8(η-C5H5)]: X-ray crystal structure of [Fe2W(µ-C2C6H4Me-4)(CO)8(η-C5H5)]

Abstract

The compounds [M(CR)(CO)₂(η-C₅H₅)](M = Mo, R Me; M = W, R = Me or C₆H₄Me-4) react with [Et₃NH][Fe₃(µ-H)(CO)₁₁] in tetrahydrofuran at 80 °C to afford bridged-acetylide complexes [Fe₂M(µ-C₂R)-(CO)₈(η-C₅H₅)]; the structure of the species M = W and R = C₆H₄Me-4 has been established by X-ray diffraction.