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Carbonyl(η 5  -cyclopentadienyl)(η 2  -ketenyl)trimethylphosphine tungsten complexes add Lewis acids to the ketene oxygen atom with concomitant conversion of the η 2  -ketenyl into an η 2  -alkyne ligand.

zeitschrift für naturforschung b

Übergangsmetallketen-Verbindungen, XIX [1]. Umwandlung von  η 2  -Ketenyl-in η 2  -Alkinkomplexe mit Lewis-Säuren / Compounds of Transition Metal Ketenes, XIX [1]. Conversion of η 2  -Ketenyl-into η 2  -Alkyne Complexes Using Lewis Acids