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Investigation of the mechanism of polymerization of butadiene by π-allylic nickel complexes

✍ Scribed by Bourdauducq, P. ;Dawans, F.

Publisher
Wiley (John Wiley & Sons)
Year
1972
Tongue
English
Weight
842 KB
Volume
10
Category
Article
ISSN
0449-296X

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✦ Synopsis

Abstract

Various π‐allylic nickel complexes were synthesized by reacting bis(1,5‐cyclooctadiene)‐nickel with an allylic ester of trifluoroacetic acid. A study of the stereospecific polymerization of 1,3‐butadiene initiated by these catalysts showed the strong influence of the initial substitution in the π‐allylic ligand as well as of the solvent used for synthesis of the catalysts on the course of the reaction, i.e., on both the polymerization rate and the stereospecificity. Moreover, new catalytic species were isolated by adding electron‐accepting or electron‐donating ligands to some of the π‐allylic complexes. In that way, we were able to modify the behavior of the catalysts and, in some cases, to enhance catalytic activity considerably.

📜 SIMILAR VOLUMES

π-Allyl nickel halide–oxygen system as a
π-Allyl nickel halide–oxygen system as a catalyst for polymerization of butadiene
✍ Matsumoto, Tsuyoshi ;Furukawa, Junji ;Morimura, Hirohisa 📂 Article 📅 1971 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 536 KB

## Abstract The π‐allyl nickel halide‐oxygen system was found to be active as catalyst for stereospecific polymerization of butadiene. The catalyst from π‐allyl nickel chloride or π‐allyl nickel bromide yields the polymer of 90% __cis__‐1,4 content with high activity, whereas the catalyst from π‐al