Jérôme Gromada, J. Carpentier, A. Mortreux
Feb 1, 2004
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Coordination Chemistry Reviews
Abstract
Abstract This review focuses on the use of group 3 organometallic catalysts for ethylene and α-olefins polymerization, as well as for functionalization of such poly(α-olefin) chains. It describes the evolution from initially designed neutral alkyl (hydrido) bis(cyclopentadienyl) complexes of trivalent lanthanides towards ansa-bridged ligand systems, “constrained-geometry” hemi-metallocenes, divalent lanthanidocenes, and the most recent cyclopentadienyl-free systems.