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• W2022056598 abstract "A tantalum complex of a silicon-bridged tetramethylcyclopentadienyl−phenoxy ligand, Et2Si(η5-C5Me4)(3-tBu-5-Me-2-C6H2O)TaCl3 (2), was prepared by treating TaCl5 with the dilithium salt generated by reaction of the corresponding ligand 1 with nBuLi in the presence of Et3N in heptane. The molecular structure of 2, as confirmed by X-ray analysis, showed a four-legged piano-stool geometry around the tantalum atom and slightly twisted ligand architecture with a bridging diethylsilylene unit. The tantalum complex 2 exhibited moderate catalytic activities for copolymerization of ethylene and 1-hexene in the presence of iBu3Al/Ph3C[B(C6F5)4]. The methylation reaction of the trichlorotantalum complex 2 afforded the corresponding trimethyltantalum complex 4. Cationic dimethyltantalum species were generated by treating 4 with an equimolar amount of Ph3C[B(C6F5)4] or B(C6F5)3 and found to be thermally stable in o-dichlorobenzene-d4, even at elevated temperature." @default.
• W2022056598 created "2016-06-24" @default.
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• W2022056598 date "2010-04-07" @default.
• W2022056598 modified "2023-09-26" @default.
• W2022056598 title "Silicon-Bridged Tetramethylcyclopentadienyl−Phenoxy Complexes of Tantalum: Preparation and Alkylation of Et₂Si(η⁵-C₅Me₄)(3-^<i>t</i>Bu-5-Me-2-C₆H₂O)TaCl₃ and Generation of Its Cationic Complex" @default.
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• W2022056598 doi "https://doi.org/10.1021/om100042t" @default.
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