## Abstract The microstructure of propene/1βpentene copolymers prepared with the metallocene catalysts __rac__βEt(Ind)~2~ZrCl~2~ and __rac__βMe~2~Si(2βMeBenzβ[__e__]Ind)~2~ZrCl~2~ was studied by ^13^C NMR spectroscopy. Both catalysts lead to the formation of random copolymers although __rac__βMe~2~
Microstructure of 1-pentene cationic oligomer
β Scribed by Yu Xing Peng; Lin Feng Cun; Han Song Dai; Jia Lin Liu
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 231 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0887-624X
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π SIMILAR VOLUMES
## C1 c 1 (3) were formed together with (1). The NMR parameters of (l), its cis and trans isomers and (2) were obtained in C,D, solution at 100 MHz. Theoretical spectra of (1) at 60 MHz were simulated with the aid of a computer, using as input the NMR parameters obtained at 100 MHz and good agree
H,S accelerates the thermal isomerization of cis-2-pentene (P2c) to 1-pentene (P1) and trans-2-pentene (P2t) to around 800 K. This effect is interpreted on the basis of a free radical mechanism in which 2-pentenyl and thiyl radicals are the main chain carriers. P1 formation is essentially explained
The kinetics of the reactions of ground state oxygen atoms with 1-pentene, 1-hexene, cis-2pentene, and trans-2-pentene was investigated in the temperature range 200 to 370 K. In this range the temperature dependences of the rate constants can be represented by k Ο AΠ T n exp(Οͺ E a Π/RT) with AΠ Ο (1