文献类型：期刊文献

英文题名：Synthesis of Double Silylene-Bridged Binuclear Metallocenes and Their Cooperation Effect During Ethylene Polymerization and Ethylene/1-Hexene Copolymerization

作者：Mi, Puke[1];Xu, Sheng[1];Qu, Liangduan[1];Zhang Deshun[2];Chen Qian[2];Wang Sihan[2]

机构：[1]E China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]PetroChina Co Ltd, Inst Petrochem Engn, Daqing Chem Engn Res Ctr, Daqing Heilongjiang 163714, Peoples R China

年份：2011

卷号：121

期号：1

起止页码：21

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20111513900378);WOS:【SCI-EXPANDED(收录号:WOS:000289353700004)】；

基金：Contract grant sponsors: Science Foundation of Petro China Co., Ltd..

语种：英文

外文关键词：65306 metallocene; polymerization; cooperative effect

摘要：Novel double silylene-bridged binuclear Group 4 metallocene complexes [(eta(5)-C(5)H(5)) MCl(2)](2)[mu, mu(SiMe(2))(2) (eta(5)-RC(5)H(2))(2)] [R = Me, M Zr (1); R allyl, M = Ti (2); R allyl, M Zr (3); R (n)Bu, M = Ti (5); R = Me(3)Si, M Zr (6)] and [(eta(5)-CH(3)C(5)H(4))ZrCl(2)](2)[mu, mu-(SiMe(2))(2) (eta(5)-allyl-C(5)H(2))(2), (4)] were synthesized by the reaction of CpMCl(3) (M = Ti, Zr) with [mu, mu-(SiMe(2))(2) (eta(5)-RC(5)H(2))(2)](2-) (L(2-)) in THF, and they were all well characterized by (1)H-NMR, MS, and EA. When activated with methylaluminoxane (MAO), this series complexes are active catalysts for Ethylene polymerization (Complex 3, 3.86 x 10(6) g-PE/mol-M h, Al/Zr = 500) and copolymerization of ethylene with 1-hexene (Complex 3,30.87 x 10(5) g-polymer/mol-M h, 1-hexene content in polymer 2.34 mol %, Al/Zr = 1000). The result of polymerization implies that there is a cooperative effect between the two metals in the double-bridged binuclear molecules. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 21-26, 2011