Accurate Prediction of Copolymerization Statistics in Molecular Olefin Polymerization Catalysis: The Role of Entropic, Electronic, and Steric Effects in Catalyst Comonomer Affinity

ACS Catalysis ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 1512-1519 ◽  
Author(s):  
Francesco Zaccaria ◽  
Christian Ehm ◽  
Peter H. M. Budzelaar ◽  
Vincenzo Busico
Keyword(s):  
Olefin Polymerization ◽  
Accurate Prediction ◽  
Steric Effects ◽  
Polymerization Catalysis ◽  
Electronic And Steric Effects

Unexpected formation and conversion: role of substituents of 1,3-ynones in the reactivity and product distribution during their reactions with Ru3(CO)12

2019 ◽  
Vol 43 (3) ◽  
pp. 1478-1486
Author(s):  
Lei Xu ◽  
Liping Jiang ◽  
Shasha Li ◽  
Guofang Zhang ◽  
Weiqiang Zhang ◽  
...  
Keyword(s):  
Product Distribution ◽  
Molecular Structures ◽  
Steric Effects ◽  
Unexpected Formation ◽  
Electronic And Steric Effects

Electronic and steric effects of the substituents in 1,3-ynones play key roles in the product distribution and molecular structures.

Titanium pyridyl-phosphinimide complexes — Synthesis, structure, and ethylene polymerization catalysis

2006 ◽  
Vol 84 (5) ◽  
pp. 755-761 ◽  
Author(s):  
Chad Beddie ◽  
Pingrong Wei ◽  
Douglas W Stephan
Keyword(s):  
Molecular Weight ◽  
Key Words ◽  
Ethylene Polymerization ◽  
Olefin Polymerization ◽  
Polymerization Catalysts ◽  
Pyridyl Group ◽  
Molecular Weight Distributions ◽  
Polymerization Catalysis ◽  
Weight Distributions

A series of Ti–pyridyl-phosphinimide complexes of the form Cp′TiX2[NPR2(2-CH2Py)] (Cp′ = Cp, Cp*, R = i-Pr, t-Bu, X = Cl, Me) have been prepared and characterized. These complexes generate ethylene polymerization catalysts upon activation with MAO or B(C6F5)3. The resulting polymers exhibit broad molecular weight distributions. The role of the pyridyl group is discussed in light of stoichiometric reactions of CpTiCl2[NPR2(2-CH2Py)] with B(C6F5)3.Key words: phosphinimide complexes, pyridyl-phosphinimides, olefin polymerization.

scholarly journals The Multifaceted Role of Methylaluminoxane in Metallocene-Based Olefin Polymerization Catalysis

2018 ◽  
Vol 51 (2) ◽  
pp. 343-355 ◽  
Author(s):  
Marjolein E. Z. Velthoen ◽  
Ara Muñoz-Murillo ◽  
Abdelkbir Bouhmadi ◽  
Michaël Cecius ◽  
Steve Diefenbach ◽  
...  
Keyword(s):  
Olefin Polymerization ◽  
Polymerization Catalysis
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