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Homogeneous Metallocene-Mediated Propylene Polymerization: Catalyst Symmetry, Ion-Pairing, and Counteranion Effects on Polymerization Kinetics, Selectivity, and Specificity

Description:

Counteranion effects on the rate and stereochemistry of propylene polymerization mediated by ion-pair complexes derived from dimethylzirconocene precatalysts activated with strongly Lewis-acidic perfluoroarylmetalloid cocatalyst/activators are shown to arise from the strength of the cation-anion interaction. This is quantified using CS-symmetric Me2C(Cp)(Flu)ZrMe2 (Cp = C5H4, &#951;5 cyclopentadienyl; Flu = C13H8, &#951;5...

Keyword:

cocatalyst, polyolefin, microstructure, ion pair, metallocene, and polymerization

Subject:

Chemistry

Creator:

John Andrew Stevens Roberts

Owner:

Scholarly Digital Publishing

Date Uploaded:

05/09/2018

Date Modified:

05/09/2018

Date Created:

2006-11-28

Resource Type:

Dissertation