Benzoxidazolyl-pyridyl Late Transition Metal Complexes in Ethylene Reactivity
The catalytic system plays the key role in olefin polymerization process. Therefore, many new catalyst models for ethylene oligomerization and polymerization have been extensively investigated. After Brookhart and co-workers discovered the a-diimine Ni(Ⅱ) complexes polymerizing ethylene,which resurrected chemistry of nickel complexes as catalysts toward ethylene reactivity, iron-and cobalt-based catalysts bearing 2,6-bis(imino)pyridine ligands for the polymerization of ethylene were reported, individually, by the groups of Brookhart and Gibson. With our efforts,late transition metal complexes ligated by 2-(2-benzimidazolyl)-6-(1-(arylimino) ethyl)pyridines were found to be highly active for ethylene oligomerization and polymerization,in case with obtaining oligomers high selectivity for α-olefins were observed, while long-chain polyethylenes with vinyl group wereobtained for polymerization. Inspired by the success of this model, bidentate nickel (Ⅱ) complexes ligated by 2-(2-benzoxidazole)-6-methylpyridine as well as 2-(benzoxazolyl)-6-(1-(arylimino)ethyl)pyridyl late-transition metal complexes have been successively synthesized and fully characterized by FT-IR spectroscopic and elemental analysis.
Gao Rong Liwei Xiao Fosong Wang Wen-Hua Sun
Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
国际会议
5th International Symposium on High-Tech Polymer Materials(HTPM-V)(第五届国际高技术高分子材料学术会议)
北京
英文
78-79
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）