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- W2069979523 endingPage "16579" @default.
- W2069979523 startingPage "16573" @default.
- W2069979523 abstract "The mechanisms for Ni(dppe)Cl(2)-catalyzed chain-growth polymerization of 4-bromo-2,5-bis(hexyloxy)phenylmagnesium chloride and 5-bromo-4-hexylthiophen-2-ylmagnesium chloride were investigated. Rate studies utilizing IR spectroscopy and gas chromatography revealed that both polymerizations exhibit a first-order dependence on the catalyst concentration but a zeroth-order dependence on the monomer concentration. (31)P NMR spectroscopic studies of the reactive organometallic intermediates suggest that the resting states are unsymmetrical Ni(II)-biaryl and Ni(II)-bithiophene complexes. In combination, the data implicate reductive elimination as the rate-determining step for both monomers. Additionally, LiCl was found to have no effect on the rate-determining step or molecular weight distribution in the arene polymerization." @default.
- W2069979523 created "2016-06-24" @default.
- W2069979523 creator A5001605031 @default.
- W2069979523 creator A5006764261 @default.
- W2069979523 date "2009-10-28" @default.
- W2069979523 modified "2023-10-10" @default.
- W2069979523 title "Mechanistic Studies on Ni(dppe)Cl<sub>2</sub>-Catalyzed Chain-Growth Polymerizations: Evidence for Rate-Determining Reductive Elimination" @default.
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