SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2

Zheng-guo Cai; Yuushou Nakayama; Takeshi Shiono

Your Location：

Home >

Browse articles >

SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2

Papers | Updated：2021-06-21

- SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2
- SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2
- 高分子科学（英文版） 2008年26卷第5期页码：575-578
- Affiliations：
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2008-09-20
- Accepted：
Scan QR Code
Zheng-guo Cai, Yuushou Nakayama, Takeshi Shiono. SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2[J]. 高分子科学（英文版）, 2008,26(5):575-578.

Zheng-guo Cai, Yuushou Nakayama, Takeshi Shiono. SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2[J]. 2008, 26(5): 575-578.
Zheng-guo Cai, Yuushou Nakayama, Takeshi Shiono. SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2[J]. 高分子科学（英文版）, 2008,26(5):575-578. DOI：

Zheng-guo Cai, Yuushou Nakayama, Takeshi Shiono. SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2[J]. 2008, 26(5): 575-578. DOI：

摘要

[t-BuNSiMe2(2

7-t-Bu2Flu)]ZrMe2 and [t-BuNSiMe2(3

6-t-Bu2Flu)]ZrMe2 were synthesized

and the solid structure of complex [t-BuNSiMe2(2

7-t-Bu2Flu)]ZrMe2 was elucidated by single crystal X-ray analysis. These complexes were applied for propylene polymerization using dried modified methylaluminoxane as a cocatalyst at 0οC and 20οC in toluene. Both systems did not show activity at 0οC

but they conducted the polymerization at 20οC. The introduction of t-butyl substituents to the fluorenyl ligand improved the activity more than six times regardless of the position of the substituents

and both systems gave low molecular weight polypropylenes (PP) with narrow molecular weight distribution. The introduction of t-butyl substituents also improved the syndiospecificity and [t-BuNSiMe2(3

6-t-Bu2Flu)]ZrMe2 gave highly syndiotactic PP with the syndiotactic pentad of 0.91 and the melting point of 145οC.

Abstract

[t-BuNSiMe2(2

7-t-Bu2Flu)]ZrMe2 and [t-BuNSiMe2(3

6-t-Bu2Flu)]ZrMe2 were synthesized

and the solid structure of complex [t-BuNSiMe2(2

6-t-Bu2Flu)]ZrMe2 gave highly syndiotactic PP with the syndiotactic pentad of 0.91 and the melting point of 145οC.

关键词

Keywords

references

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

From Molecular Defect to Macroscopic Performance: Manipulating Dichroism and Mechanics in Iodine-doped Poly(vinyl alcohol) via Ethylene Incorporation

Manipulating Hierarchical Aggregation Structure via Film-forming Kinetics Enables Organic Photovoltaics over 20% Efficiency

Sliding Dynamics of Ring Chain on a Rod-Coil Block Copolymer in Rotaxane

Porous Organic Polymers for Photocatalytic Hydrogen Peroxide Production: Recent Advances and Future Perspectives

Upgrading Commercially Available Polyethylene to High-value Materials with Strong Mechanical Performance and Hydrophilicity by Blending with Ethylene/meta-Methoxystyrene Copolymers