Protonation of tolylidyne ligands bridgine tungsten–cobalt and –platinum bonds; reactivity of the cationic dimetal µ-carbene complexes produced, and X-ray crystal structures of [PtW{µ-η1,η3-CH(C6H4Me-4)}(CO)2-(PMe3)2(η-C5H5)][BF4], [PtW(µ-H){µ-CH(C6H4Me-4)}(Co)2(PMe3)2-(η-C5H5)], and [CoW{µ-η1, η3-C(C6H4Me-4)C(Me)C(Me)H}-(µ-Co)(Co)(η-C5H5)(η-C5Me5)][BF4]

Abstract

The synthesis and reaction of the complex salts [MW{µ-η¹,η³-C(C₆H₄Me-4)H}(CO)₂L_n(η-C₅H₅)][BF₄][MLⁿ= Co(CO)(η-C₅Me₅) and Pt(PMe₃)₂] are described; the structure of the platinum–tungsten species, and the compounds [PtW(µ-H){µ-CH(C₆H₄Me-4)}(CO)₂(PMe₃)₂(η-C₅H₅)] and [CoW{µ-η¹,η³-C(C₆H₄Me-4)C(Me)C(Me)H}-(µ-CO)(CO)(η-C₅H₅)(η-C₅Me₅)][BF₄] being established by X-ray diffration.