Half-titanocenes for precise olefin polymerisation: effects of ligand substituents and some mechanistic aspects
Half-titanocenes for precise olefin polymerisation: effects of ligand substituents and some mechanistic aspects
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DOI：
10.1039/c1dt10086f
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发表时间：
2011-08-01
影响因子：
4
通讯作者：
Liu, Jingyu
中科院分区：
文献类型：
--
作者：
Nomura, Kotohiro;Liu, Jingyu
综述了非桥联改性半茂钛Cp'TiX_2（Y）（X =卤素、烷基）作为新型烯烃聚合催化剂的一些实例。这些配合物显示出独特的特性，不仅为乙烯（共）聚合，但也为间规苯乙烯聚合，乙烯/苯乙烯共聚;精确微调的配体取代基起着重要的作用，成功的（共）聚合;一个不同的机理考虑间规苯乙烯聚合，这可以解释在这种催化的共聚行为，也已被引入。
Selected examples concerning effects of both cyclopentadienyl fragment (Cp') and anionic donor ligand (Y) in nonbridged modified half-titanocenes of the type, Cp'TiX2(Y) (X = halogen, alkyl), as new type of olefin polymerisation catalysts have been reviewed. These complexes displayed unique characteristics not only for ethylene (co) polymerisation but also for syndiospecific styrene polymerisation, ethylene/styrene copolymerisation; precise fine tuning of the ligand substituents plays an important role for the successful (co) polymerisation; a different mechanistic consideration for the syndiospecific styrene polymerisation, which can explain the copolymerisation behaviour in this catalysis, has also been introduced.