文献类型：期刊文献

英文题名：Ethylene homopolymerization and ethylene/1-hexene copolymerization catalysed by mixed salicylaldiminato cyclopentadienyl zirconium complexes

作者：Huang, Wenzhong[1];Sun, Xueqin[1];Ma, Haiyan[1];Huang, Jiling[1]

机构：[1]E China Univ Sci & Technol, Lab Organometall Chem, Shanghai 200237, Peoples R China

年份：2010

卷号：363

期号：9

起止页码：2009

外文期刊名：INORGANICA CHIMICA ACTA

收录：;EI(收录号：20202208746338);WOS:【SCI-EXPANDED(收录号:WOS:000277934700011)】；

基金：This work is subsidized by the National Basic Research Program of China (2005CB623801), National Natural Science Foundation of China (NNSFC, 20774027), the Program for New Century Excellent Talents in University (for H. Ma, NCET-06-0413). All the financial support is gratefully acknowledged.

语种：英文

外文关键词：Zirconium; Salicylaldiminato; Cyclopentadienyl; Ethylene homopolymerization; Copolymerization

摘要：Three new mixed salicylaldiminato cyclopentadienyl zirconium complexes Cp'[2-Bu(t)-6-(C(6)H(11)NCH) C(6)H(3)O]ZrCl(2) (Cp' = (n)BuC(5)H(4) (3a), (t)BuC(5)H(4) (3b) and Me(4)C(5)H (3c)) were prepared and the structure of complex 3c was confirmed by X-ray diffraction analysis. All of the three complexes showed high activities for ethylene homopolymerization with the activation of methylaluminoxane, and 3a showed the highest activity up to 1.15 x 10(6) g PE/mol Zr h for ethylene homopolymerization at 70 degrees C. The (13)C NMR spectrum showed that the obtained polymer is linear polyethylene. Complexes 3a-c also catalysed ethylene/1-hexene copolymerization with high activities from 6.29 x 10(5) to 12.3 x 10(5) g Copolymer/mol Zr h and with 0.89-1.39% 1-hexene incorporation level. In addition, the influence of the substituted alkyl on Cp on the catalytic behavior of corresponding zirconium complexes was discussed. (C) 2009 Elsevier B.V. All rights reserved.