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- W2030369743 abstract "Binuclear siloxyaluminum methyl complexes of the type Me2Al(μ-OSiR3)2AlMe2 react with protonated N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate, with release of CH4, to form the dimethylaniline (DMA)-stabilized siloxyaluminum methyl cations Me2Al(μ-OSiR3)2AlMe(NMe2(C6H5)+. These cations abstract a Cl- ligand from (C5H5)2ZrCl2, to give the dinuclear cation {(C5H5)2ZrCl}2(μ-Cl)+, and a CH3- ligand from (C5H5)2Zr(CH3)2, to give by way of the DMA-stabilized cation (C5H5)2Zr(CH3)NMe2(C6H5)+ the CH-activation product (C5H5)2ZrCH2NMe(C6H5)+; reaction with Me2Si(ind)2ZrMe2 in toluene solution yields a moderately active catalyst for ethene polymerization. This reactivity of siloxyaluminum methyl cations is qualitatively similar to, although substantially lower than, that of a silica gel surface treated with trimethylaluminum and a cationizing agent." @default.
- W2030369743 created "2016-06-24" @default.
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- W2030369743 date "2003-02-19" @default.
- W2030369743 modified "2023-10-18" @default.
- W2030369743 title "Siloxyaluminum Alkyl Cations: Syntheses, Structures, and Reactions Related to Activation of Zirconocene Catalysts on Silica Gel Surfaces" @default.
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- W2030369743 doi "https://doi.org/10.1021/om0207515" @default.
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