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• W1982506843 abstract "Wolfram-substituierte Ketene des Typs (η5-C5H5)(CO)[P(CH3)3]2W[C(CO)ar] 2a–d (arC6H5, C6H4CH3-(4), C6H4OCH3-(4), C5H4FeC5H5) bilden sich bei der Umsetzung von Dicarbonyl(η5-cyclopentadienyl)carbinwolfram-Komplexen 1a–d mit Trimethylphosphin. Die Abspaltung eines Phosphinliganden aus 2a–d führt zu einer weiteren Ketenart (η5-C5H5)(CO)[P(CH3)3]W[OCCar] 3a–d, welche auch auf direktem Weg aus 1a–d mit äquimolarer Menge Phosphin zugänglich ist. Letztere Reaktion erlaubt ferner die Synthese von (η5-C5H5)(CO)[P(CH3)3]W[OCCC6H2(CH3)3-(2,4,6)](3e) und (η5-C5H5)(CO)[P(C6H5)3]W[OCCC6H4CH3-(4)] (3f). Die diamagnetischen, teilweise sehr thermolabilen Komplexe wurden durch IR-, 1H-, 13C- und 31P-NMR-Spektren und, im Fall von 2b und 3b, durch eine Röntgenstrukturanalyse gesichert. η1- and η2-Ketenyl Compounds of Tungsten Tungsten-substituted ketens of the type (η5-C5H5)(CO)[P(CH3)3] 2 W[C(CO)ar] 2a–d (arC6H5, C6H4CH3-(4), C6H4OCH3-(4), C5H4FeC5H5) are formed on treatment of dicarbonyl-(η5-cyclopentadienyl)carbyne tungsten complexes 1a–d with trimethylphosphine. Elimination of one phosphine ligand from 2a–d leads to a further ketene type (η5-C5H5)(CO)[P(CH3)3] W-[OCC–ar] 3a–d, which is also available by the reaction of 1a–d with an equimolar amount of phosphine. The latter way allows also the synthesis of (η5-C5H5)(CO)[P(CH3)3] W[OCC–C6H2(CH3)3-(2,4,6)] (3e) and (η5-C5H5)(CO)[P(C6H5) 3]W[OCC–C6H4CH3-(4)] (3f). The diamagnetic compunds, some of which are very thermolabile, were characterized by IR, 1H, 13C and 31P NMR spectroscopy, and in the case of 2b and 3b by an X-ray analysis." @default.
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• W1982506843 date "1977-12-01" @default.
• W1982506843 modified "2023-09-27" @default.
• W1982506843 title "η ¹ ‐ und η ² ‐Ketenyl‐Verbindungen des Wolframs" @default.
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• W1982506843 doi "https://doi.org/10.1002/cber.19771101208" @default.
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