Die Streitfrage um die Art der aktiven Spezies bei der durch Bis(imino)pyridincobalt-Verbindungen katalysierten Ethylenpolymerisation wurde von P. J. Chirik et al. beantwortet. In der Zuschrift auf S. 8293 ff. berichten sie über die Synthese und Charakterisierung einer Familie von Alkylkationen, die
Inside Cover: Synthesis, Electronic Structure, and Ethylene Polymerization Activity of Bis(imino)pyridine Cobalt Alkyl Cations (Angew. Chem. Int. Ed. 35/2011)
✍ Scribed by Crisita Carmen Hojilla Atienza; Dr. Carsten Milsmann; Dr. Emil Lobkovsky; Prof. Paul J. Chirik
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 873 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0044-8249
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✦ Synopsis
The controversy … … surrounding the nature of the active species in ethylene polymerization catalyzed by bis(imino)pyridine cobalt compounds has been resolved by P. J. Chirik et al. In their Communication on page 8143 ff., they report the synthesis and characterization of a family of alkyl cations, which serve as single-component catalysts for the polymerization of ethylene. These compounds were characterized definitively as Co II species that deactivate by ligand-induced metal-alkyl bond homolysis.
📜 SIMILAR VOLUMES
A new spin on polymers: the title cations comprise low-spin Co(II) centers with neutral bis(imino)pyridine chelating ligands. These complexes serve as single-component ethylene polymerization catalysts and offer insight into the mechanism of chain growth and catalyst deactivation, which occurs by fo