کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9614855 | 48550 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalytic polymerisation of ethylene with tris(pyrazolyl)borate complexes of late transition metals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Catalytic polymerisation of ethylene with tris(pyrazolyl)borate complexes of late transition metals Catalytic polymerisation of ethylene with tris(pyrazolyl)borate complexes of late transition metals](/preview/png/9614855.png)
چکیده انگلیسی
Various 3,5-substituted tris(pyrazolyl)borate nickel(II) and palladium(II) complexes have been prepared and characterised in both the solid state and solution [tris(pyrazolyl)borate = tris(3,5-dimethylpyrazolyl)borate (Tp*), tris(3-t-butyl-5-methylpyrazolyl)borate (Tpt-Bu,Me) or tris(3-cumyl-5-methyl pyrazolyl)borate (TpCum,Me)]. The crystal structures of the tetrahedral complex [k3N,Nâ²,Nâ³-Tpt-Bu,MeNiCl] and of the trigonal-bipyramidal derivative [k3N,Nâ²,Nâ³-TpCum,MeNiCl(3-methyl-5-cumylpyrazole)] have been determined by X-ray diffraction analysis. The catalytic performance of all compounds has been tested in ethylene polymerisation. The nickel catalysts activated with methylaluminoxane (MAO) produce polyethylene with moderate to good activity, while the palladium compounds show scarce activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 229, Issues 1â2, 29 March 2005, Pages 191-197
Journal: Journal of Molecular Catalysis A: Chemical - Volume 229, Issues 1â2, 29 March 2005, Pages 191-197
نویسندگان
Roberto Santi, Anna Maria Romano, Anna Sommazzi, Manuela Grande, Claudio Bianchini, Giuseppe Mantovani,