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Synthesis and Reactions of the Carbene Complexes L> (M = Mo or W; L = η-C5H5, η-C5Me5 or indenyl), (η-C5H5)> (M = Mo or W) and (η-C5H5) (M = Mo or W, R = Me or Ph). X-Ray Crystal Structures of <Mo(SnPh3)(CO)2<C(OE...

DOI: 10.1039/DT9910000749

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 749 - 758 (1991)

Update date:2022-08-17

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Authors:

Adams, HarryAdams, Harry

Bailey, Neil A.Bailey, Neil A.

Bentley, Gary W.Bentley, Gary W.

Hough, GordonHough, Gordon

Winter, Mark J.Winter, Mark J.

Woodward, SimonWoodward, Simon

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Article abstract of DOI:10.1039/DT9910000749

Treatments of the tricarbonyls with LiPh followed by results in the formation of the carbenes L> in good to high yields.Related reactions of but using LiMe afford (η-C5H5)>.The complex trans-(η-C5Me5)> is monoclinic, a=14.611(36), b=16.788(20), c=16.183(30) Angstroem, β=96.08(18) deg, and R=0.0888 for 2117 independent reflections.While the η-C5H5 and indenyl complexes exist as pairs of isomers in solution generated by rotation apout the M=Ccarbene bond, the η-C5Me5 complexes exist as single isomers in solution.Treatment of (η-C5H5)> (M = Mo or W) with I2 results in formation of the iodometalspecies (η-C5H5)>.The complex (η-C5H5)> is monoclinic, a=9.34(3), b=13.00(2), c=13.53(3) Angstroem, β= 97.8(2) deg, and R=0.0812 for 2091 independent reflections.In solution this compound exists as three trans isomers and one cis.Treatment of (η-C5Me5)> with I2 results in the eventual formation of in the molybdenum case and in both cases.

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