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109366 |
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|a dc
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|a Hoveyda, Amir H.
|e author
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|a Massachusetts Institute of Technology. Department of Chemistry
|e contributor
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|a Townsend, Erik M.
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|a Hyvl, Jakub
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|a Forrest Jr, William P
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|a Schrock, Richard Royce
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|a Mueller, Peter
|e contributor
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|a Townsend, Erik M.
|e author
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|a Hyvl, Jakub
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|a Forrest Jr, William P
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|a Schrock, Richard Royce
|e author
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|a Mueller, Peter
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|a Synthesis of Molybdenum and Tungsten Alkylidene Complexes That Contain Sterically Demanding Arenethiolate Ligands
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|b American Chemical Society (ACS),
|c 2017-05-26T14:08:20Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/109366
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|a Imido alkylidene complexes of Mo and W and oxo alkylidene complexes of W that contain thiophenoxide ligands of the type S-2,3,5,6-Ph[subscript 4]C[subscript 6]H (STPP) and S-2,6-(mesityl)[subscript 2]C[subscript 6]H[subscript 3] (SHMT = S-hexamethylterphenyl) have been prepared in order to compare their metathesis activity with that of the analogous phenoxide complexes. All thiolate complexes were significantly slower (up to ∼10× slower) for the metathesis homocoupling of 1-octene or polymerization of 2,3-dicarbomethoxynorbornene, and none of them was Z-selective. The slower rates could be attributed to the greater σ-donating ability of a thiophenoxide versus the analogous phenoxide and consequently a higher electron density at the metal in the thiophenoxide complexes.
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|a National Institutes of Health (U.S.) (Grant GM-59426)
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|a en_US
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|a Article
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|t Organometallics
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