کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
67590 | 48488 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel dimethylsilylene isopropylidene doubly bridged metallocenes: Syntheses, identifications, and activities for olefin polymerizations
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Novel doubly bridged metallocene complexes (Me2Si)(Me2C)(C5H3)2MCl2 (M = Ti(4), Zr(8)), were synthesized by reactions of the corresponding ligand dilithium salt with MCl4. The structures were determined by X-ray analysis. As was expected, each of them showed the smallest bite-angle (4: 120°; 8: 114°) in the bis(cyclopentadienyl) type of Ti or Zr complexes. Copolymerizations of ethylene/1-octene were carried out using these metallocenes in the presence of cocatalyst. These complexes show high incorporation abilities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 272, Issues 1â2, 2 July 2007, Pages 152-158
Journal: Journal of Molecular Catalysis A: Chemical - Volume 272, Issues 1â2, 2 July 2007, Pages 152-158
نویسندگان
Kiyohiko Yokota, Masami Watanabe, Takuji Okamoto, Nobuhiro Yabunouchi, Yukio Shimane, Nobuhide Ishihara,