American Chemical Society
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Nine-Membered Titanacyclic Complexes Based on an Ethylene-Bridged Bis(phenolato) Ligand:  Synthesis, Structure, and Olefin Polymerization Activity

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journal contribution
posted on 1997-09-30, 00:00 authored by Stefan Fokken, Thomas P. Spaniol, Jun Okuda, Fritz G. Sernetz, Rolf Mülhaupt
Tetravalent titanium complexes containing the ethylene-linked bis(phenolato) ligand ebmp exhibit a C2-symmetric conformation according to single-crystal X-ray structural analyses. In solution, a fluxional process equivalent to an enantiomerization is detected. Upon activation with methylaluminoxane, these complexes copolymerize ethylene and styrene with remarkably high incorporation of styrene.