[2-(Dimethylamino)ethyl]-substituted cyclopentadienyltitanium complexes ( 3−6 ) have been synthesized and characterized. Structural data indicates intramolecular coordination of the dimethylamino group to titanium. The catalytic activities and selectivities for styrene, ethylene, and propylene polymerization with 3−6 have been compared with the reference compounds CpTiCl 3 ( 1 ), Cp*TiCl 3 ( 2 ), and Cp 2 TiCl 2 ( 7 ), and are consistent with Ti−N Lewis acid−base interaction.
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Flores et al. (1996) studied this question.
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