S. Fokken et al., 9-MEMBERED TITANACYCLIC COMPLEXES BASED ON AN ETHYLENE-BRIDGED BIS(PHENOLATO) LIGAND - SYNTHESIS, STRUCTURE, AND OLEFIN POLYMERIZATION ACTIVITY, Organometallics, 16(20), 1997, pp. 4240-4242
Tetravalent titanium complexes containing the ethylene-linked bis(phen
olato) ligand ebmp exhibit a C-2-symmetric conformation according to s
ingle-crystal X-ray structural analyses. In solution, a fluxional proc
ess equivalent to an enantiomerization is detected. Upon activation, w
ith. methylaluminoxane, these complexes copolymerize ethylene and styr
ene with remarkably high incorporation of styrene.