SiMe
2(η
1-C
13H
8)(η
1-
tBuN)TiMe
2(thf) (
1; C
13H
8 = fluorenyl, thf = tetrahydrofuran) was synthesized and characterized by
1H,
13C, DEPT NMR, and single crystal X-ray analysis. The catalyst system composed of the complex
1 and modified methylaluminoxane (MMAO) exhibits the characteristics of a quasi-living polymerization of 1-hexene in toluene at −30°C, producing a
syndiotactic-rich polymer with a relatively narrow molecular weight distribution (
Mw/
Mn = 1.36). Moreover, this catalyst system is also capable of promoting the quasi-living copolymerization of 1-hexene with norbornene at room temperature, yielding random copolymers with narrow molecular weight distributions. The quasi-living nature of the catalyst allows the synthesis of
syndiotactic-rich poly(1-hexene)-
block-poly(1-hexene-
ran-norbornene) diblock copolymers.
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