Abstract

The synthesis and characterization of the terminal methoxycarbyne complex Tp′(CO) 2WCOMe is described. Nucleophiles attack Tp′(CO) 2WCOMe at the methyl group of the methoxide substituent. The carbyne complex undergoes reversible protonation at the carbyne carbon in the presence of [H(Et 2O) 2][BAr′ 4] to generate the α-agostic carbene complex [Tp′(CO) 2WC(H)OMe][BAr′ 4].

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