1-Hexene polymerization was investigated with bis[N-(3-tert-butylsalicylidene)phenylaminato]titanium(IV) dichloride (1) using iBu3Al/Ph3CB(C6F5)4 as a cocatalyst. This catalyst system produced poly(1-hexene) having a high molecular weight (Mw = 445 000–884 000, 0–60°C). 13C NMR spectroscopy revealed that the high molecular weight poly(1-hexene) possesses an atactic structure with about 50 mol-% of regioirregular units.
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Saito et al. (2000) studied this question.