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Inside Cover Synthesis Electronic Structure and Ethylene Polymerization Activity of Bis(imino)pyridine Cobalt Alkyl Cations (Angew. Chem. Int. Ed

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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.
Inside Cover
Crisita Carmen Hojilla Atienza, Carsten Milsmann, Emil Lobkovsky,
and Paul J. Chirik*
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 singlecomponent 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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alkyl, imine, electronica, cobalt, cation, int, pyridin, cover, structure, angel, synthesis, chem, ethylene, activity, insider, bis, polymerization
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