Angewandte Chemie International Edition

Cover image for Vol. 55 Issue 49

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPhotoChem, ChemPlusChem, Zeitschrift für Chemie

50_35i/2011Inside Cover: Synthesis, Electronic Structure, and Ethylene Polymerization Activity of Bis(imino)pyridine Cobalt Alkyl Cations (Angew. Chem. Int. Ed. 35/2011)

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 CoII species that deactivate by ligand-induced metal–alkyl bond homolysis.

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