文献类型：期刊文献

英文题名：Synthesis, crystal structure and ethylene polymerization activity of zirconium complexes bearing mono-Cp and tridentate Schiff base [ONO] ligands

作者：Chen, QH; Huang, JL; Yu, J

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

年份：2005

卷号：8

期号：5

起止页码：444

外文期刊名：INORGANIC CHEMISTRY COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000228951900007)】；

语种：英文

外文关键词：zirconium; Schiff base; tridentate ligand; ethylene polymerization

摘要：A novel zirconium complex I bearing mono-Cp and tridentate Schiff base [ONO] ligand is synthesized by the reaction of CpZrCl3 center dot DME with lithium salt of Schiff base ligand. The molecular structure of complex 1 is determined by X-ray single crystal diffraction. A nine-membered zirconoxacycle complex 2 is obtained by an intramolecular elimination of CH3Cl from complex 1. When activated by excess methylaluminoxane (Al/Zr = 2000:1), complexes I and 2 exhibit high thermal stability and high catalytic activities for ethylene polymerization [1, 769 kg PE/(mol Zr center dot h); 2, 272 kg PE/(mol Zr center dot h) at 80 degrees C]. (c) 2005 Elsevier B.V. All rights reserved.