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- W1521427885 abstract "On thermolysis of (CO)5MC(OEt)SiPh3 (M = W, Mo, Cr) in the solid state or in solution three different decomposition pathways are observed, which are unusual for Fischer-type carbene complexes: fragmentation of the complex to give triphenylsilane, ethylene and M(CO)6, formation of ethyl(triphenylsilyl)ketone and decomposition to give ethyltriphenylsilane and M(CO)6. The proportions of reactants which follow each reaction path depend on the metal and on the reaction conditions; in any case the formation of ethyltriphenylsilane is the less-favoured. In contrast, when (CO)5WC(OMe)SiPh3 is heated either in the solid state or in solution, MeSiPh3 and W(CO)6 are formed almost exclusively. Bei der Thermolyse von (CO)5MC(OEt)SiPh3 (M = W, Mo, Cr) in Substanz oder in Lösung werden drei unterschiedliche, für Fischer-Carben-Komplexe ungewöhnliche Zerfallswege beobachtet: Fragmentierung des Komplexes in Triphenylsilan, Ethylen und M(CO)6, Bildung yon Ethyl(triphenylsilyl)keton und Zerfall in Ethyltriphenylsilan und M(CO)6. Der prozentuelle Anteil der drei Reaktionen hängt vom Metall und von den Reaktionsbedingungen ab; in jedem Fall ist aber die Bildung von Ethyltriphenylsilan weniger begünstigt als die beiden anderen Reaktionen. Im Gegensatz dazu zerfällt (CO)5WC(OMe)SiPh3 sowohl im festen Zustand als auch in Lösung beim Erhitzen fast ausschliesslich in MeSiPh3 und W(CO)6." @default.
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- W1521427885 date "1987-12-01" @default.
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- W1521427885 title "Siliciumhaltige Carben-Komplexe" @default.
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- W1521427885 doi "https://doi.org/10.1016/0022-328x(87)85189-6" @default.
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