کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1400212 | 984538 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Styrene polymerization with half-sandwich titanium complexes bearing pendent cyclo-alkenyl groups
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new series of substituted half-sandwich titanium complexes bearing bridged cyclo-alkenyl groups [η5-C5H4-(bridge)-(cyclo-alkenyl)]TiCl3 have been synthesized and characterized. All the titanium complexes display considerable catalytic activity towards the polymerization of styrene in the presence of methylaluminoxane (MAO), yielding atactic-rich polystyrene. Experimental results indicate that there might be an interaction between the double bond and the titanium center, which was reflected by 1H NMR spectrum and polymerization behavior. As compared with the size of cyclo-alkenyl ring, the bridging unit plays a crucial role in reactivity and stereoselectivity of styrene polymerization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 42, Issue 11, November 2006, Pages 3032-3040
Journal: European Polymer Journal - Volume 42, Issue 11, November 2006, Pages 3032-3040
نویسندگان
Chen Wang, Jiling Huang,