کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1299651 | 1498843 | 2006 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Group 4 metallocene polymerisation catalysts: quantification of ring substituent steric effects
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Group 4 metallocene polymerisation catalysts: quantification of ring substituent steric effects Group 4 metallocene polymerisation catalysts: quantification of ring substituent steric effects](/preview/png/1299651.png)
چکیده انگلیسی
This review summarises attempts that have been made to quantify and separate steric and electronic factors associated with zirconocene-type catalysts in the olefin polymerisation reaction. The use of cone and solid angles, measurement of molecular spaces (coordination gap aperture, obliquity angle and lateral extension angle), the Taft steric parameter as well as a number of theoretical methods (ab initio Hartree Fock, QSAR, 3D-QSAR and paired interacting orbitals) as approaches to the quantification of ligand size is discussed. Attempts to associate these measures with catalyst activity are reviewed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Coordination Chemistry Reviews - Volume 250, Issues 1–2, January 2006, Pages 18–35
Journal: Coordination Chemistry Reviews - Volume 250, Issues 1–2, January 2006, Pages 18–35
نویسندگان
Petra C. Möhring, Neil J. Coville,