Bimetallic Zirconium Amine Bis(phenolate) Polymerization Catalysts: Enhanced Activity and Tacticity Control for Polyolefin Synthesis
收藏NIAID Data Ecosystem2026-03-09 收录
下载链接：
https://figshare.com/articles/dataset/Bimetallic_Zirconium_Amine_Bis_phenolate_Polymerization_Catalysts_Enhanced_Activity_and_Tacticity_Control_for_Polyolefin_Synthesis/2036166
下载链接
链接失效反馈官方服务：
资源简介：
Binucleating
multidentate amine bis(phenolate) ligands with rigid terphenyl backbones
were designed to support two zirconium centers locked in close proximity.
Polymerizations of propylene or 1-hexene with the synthesized bimetallic
precatalysts resulted in polymers with significantly higher isotacticity
(up to 79% mmmm) in comparison to the stereoirregular
polymers produced with previously reported Cs-symmetric monometallic analogues. The bimetallic
precatalysts also display higher activity (up to 124 kg of poly(1-hexene)
(mmol of Zr)−1 h–1), in comparison
to the monometallic analogues, and among the highest activities reported
for nonmetallocene catalysts. The stereocontrol is consistent with
a bimetallic mechanism involving remote steric interactions with the
ligand sphere of the second metal center.
创建时间：
2015-12-17
