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- W126991010 abstract "The authors study the activity of triphenylmehtylneodymium chlorides and the nature of the polymerization reaction of isoprene by the action of RNdC1/sub 2/ and obtain experimental data revealing the nature of the cis-regulating sites. A graph is presented which incicates that the activities of the triphenylmethylneodymium dichloride and triphenylneodymium sesquichloride complexes become equal relative to the isomerization of isoprene when the concentration of R /SUB 1.5/ NdCl /SUB 1.5/ is twice as great as that of RNdCl/sub 2/. This finding indicates that R/sub 2/NdCl in the presence of trialkylaluminum does not participate in the polymerization of these dienes. The IR spectra of the Ph/sub 3/CNdCl /SUB 2./ nTHF complex and the products of its reaction with (iC/sub 4/H/sub 9/)/sub 3/Al and piperylene were studied. Another study was carried out on the isoprene polymerization kinetics upon the action of the NdCl /SUB 2./ R/sub 3/Al /SUP ./ aC/sub 5/H/sub 8/ complex in hexane. A derease in the polymerization rate was found in going from hexane to toluene and then to o-xylene." @default.
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- W126991010 date "1986-07-01" @default.
- W126991010 modified "2023-09-23" @default.
- W126991010 title "Nature of the active sites in the polymerization of isoprene by the action of triphenylmethylneodymium chlorides" @default.
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