Beilstein J. Org. Chem.2016,12, 1372–1379, doi:10.3762/bjoc.12.131
polymerization. All complexes investigated show very high catalytic activity and the additional side arm minimizes chain-transfer reactions, leading to increase of molecular weights of the resulting polymers.
Keywords: chromium single-site catalysts; olefin polymerization; ultra-highmolecularweight
polyethylene; Introduction
Chelate ligands with both, a strongly coordinating moiety and a weakly coordinating donor function allow the stabilization of vacant coordination sites at metal centers and may act as placeholders for external substrates. The concept of hemilabile ligands has been introduced in 1979
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Graphical Abstract
Scheme 1:
Influencing catalyst stability, olefin coordination and chain-transfer reactions by hemilabile dono...