(fluorenyl)titanium triisopropoxide and bis(fluorenyl)titanium diisopropoxide: A facile synthesis, molecular structure, and catalytic activity in styrene polymerization
(fluorenyl)titanium triisopropoxide and bis(fluorenyl)titanium diisopropoxide: A facile synthesis, molecular structure, and catalytic activity in styrene polymerization
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(芴基)三异丙醇钛和双(芴基)二异丙醇钛：苯乙烯聚合中的简便合成、分子结构和催化活性
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
K. Lyssenko
中科院分区：
文献类型：
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作者：
S. Knjazhanski;G. Cadenas;Maricela García;C. Pérez;I. Nifant’ev;I. A. Kashulin;P. Ivchenko;K. Lyssenko
[（η1-Flu）Ti（μ-OiPr）（OiPr）2]2（1）和（η1-Flu）（η5-Flu）Ti（OiPr）2（2）由FluLi和ClTi（iPrO）3容易地制备，并且与已知的（芴基）钛配合物相比显示出显著的热稳定性。这两种配合物的特征在于通过X-射线分析和随温度变化的NMR光谱。与甲基铝氧烷结合，这两种化合物都是苯乙烯聚合的高效引发剂，产生高度间同立构聚合物。
[(η1-Flu)Ti(μ-OiPr)(OiPr)2]2 (1) and (η1-Flu)(η5-Flu)Ti(OiPr)2 (2) were easily prepared from FluLi and ClTi(iPrO)3 and demonstrated a remarkable thermal stability in comparison with known (fluorenyl)titanium complexes. Both complexes were characterized by X-ray analysis and temperature-dependent NMR spectroscopy. In combination with methylaluminoxane, both compounds are highly efficient initiators for styrene polymerization, producing highly syndiotactic polymers.