A C2-Symmetric, Living α-Diimine Ni(II) Catalyst:  Regioblock Copolymers from Propylene

A C2-Symmetric, Living α-Diimine Ni(II) Catalyst:  Regioblock Copolymers from Propylene

An isomerically pure, C2-symmetric Ni(II) complex was synthesized and found to be living for propylene polymerization. The regioselectivity of the catalyst varied greatly with reaction temperature, with regioregular, highly isotactic polypropylene (PP) produced at low temperatures, and regioirregula...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of the American Chemical Society 2005-10, Vol.127 (40), p.13770-13771
Hauptverfasser: CHERIAN, Anna E., ROSE, Jeffrey M., LOBKOVSKY, Emil B., COATES, Geoffrey W.
Format: Artikel
Sprache:eng
Schlagworte:
Alkenes - chemical synthesis
Alkenes - chemistry
Applied sciences
Crystallography, X-Ray
Exact sciences and technology
Imines - chemistry
Models, Molecular
Molecular Structure
Nickel - chemistry
Organic polymers
Organometallic Compounds - chemistry
Physicochemistry of polymers
Polymers with particular structures
Preparation, kinetics, thermodynamics, mechanism and catalysts
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:An isomerically pure, C2-symmetric Ni(II) complex was synthesized and found to be living for propylene polymerization. The regioselectivity of the catalyst varied greatly with reaction temperature, with regioregular, highly isotactic polypropylene (PP) produced at low temperatures, and regioirregular PP produced at high temperatures. Regioblock PP was formed by changing the reaction temperature during the polymerization.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0540021