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Polymerization mechanism and conformation of poly(1-butene)

✍ Scribed by Tetsuo Asakura; Makoto Demura; Kaoru Yamamoto; Riichirô Chûjô

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
306 KB
Volume
28
Category
Article
ISSN
0032-3861

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Metallocene Catalysts for 1-Butene Polym
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The figure shows the general structure of the C 1 -symmetric zirconocenes investigated in this work. We would like to apologize for any inconvenience this mistake may have caused.

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## Abstract **Summary:** Isotactic polybutenes of variable isotacticity and melting points of form I in the range 100–125 °C have been prepared with both __C__~2~‐ and __C__~1~‐symmetric zirconocenes. The __C__~1~‐symmetric zirconocenes bearing the bilateral symmetric 2,5‐dimethyl‐7__H__‐cyclopenta

Conformational energies and rotational b
Conformational energies and rotational barriers in 3-methyl-1-butene and 1-butene: An ab initio and molecular mechanics study
✍ Ingrid Pettersson; Klaus Gundertofte 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 421 KB

## Abstract The calculated result obtained with MM2(87) for the rotation of the isopropyl group in 3‐methyl‐1‐butene is not in agreement with experimental data. In order to reparametrize the C~__sp__~2‐C~__sp__~3‐C~__sp__~‐C~__sp__~3 torsional angle, 3‐methyl‐1‐butene and 1‐butene have been studied