Photoreactions of Group 6 Metal Carbonyls With Ethene: Syntheses of Trans-(η22-ethene)2M(co)4(M = Cr, Mo, W)

Date

1987-11-01

Author

Grevels, Friedrich-wilhelm
Jacke, Jürgen
Özkar, Saim

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Photolysis of Cr(CO)6 in ethene-doped liquid xenon at -78 °C has been reported1 to yield (7j2-ethene)Cr(CO)5 (la), trans- (772-ethene)2Cr(CO)4 (2a), and m-(?j2-ethene)2Cr(CO)4 (3a). All three compounds were said to be thermally unstable under these experimental conditions, their stability decreasing in the order la > 2a > 3a. More recently2 la was photochemically generated from Cr(CO)6 and ethene in the gas phase. Subsequent pulsed-laser photolysis produced a transient species, detected by means of time-resolved IR spectroscopy, which decayed on the ms time scale and was assigned as m-(t)2-ethene)2Cr(CO)4 (3a). The lability and cis structure of 3a was set in contrast with the stability and trans configuration of the known (?z2-olefin)2M(CO)4 complexes of molybdenum and tungsten.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0000420366&origin=inward
https://hdl.handle.net/11511/102726

Journal

Journal of the American Chemical Society

DOI

https://doi.org/10.1021/ja00258a051

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Graduate School of Natural and Applied Sciences, Article

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Citation Formats

F.-w. Grevels, J. Jacke, and S. Özkar, “Photoreactions of Group 6 Metal Carbonyls With Ethene: Syntheses of Trans-(η22-ethene)2M(co)4(M = Cr, Mo, W),” Journal of the American Chemical Society, vol. 109, no. 24, pp. 7536–7537, 1987, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0000420366&origin=inward.