Rare-earth Metal Dialkyl Complexes Supported by 1,3-Disubstituted Indolyl Ligand: Synthesis, Characterization and Catalytic Activity for Isoprene Polymerization  

作　　者：GUO Li-Ping SONG Ren-Yuan 郭立平;宋任远(Anhui Provincial Engineering Laboratory of Silicon-based Materials,Bengbu University,Bengbu 233030,China;The Key Laboratory of Functional Molecular Solids,Ministry of Education,Anhui Normal University,Wuhu 241000,China)

机构地区：[1]Anhui Provincial Engineering Laboratory of Silicon-based Materials,Bengbu University,Bengbu 233030,China [2]The Key Laboratory of Functional Molecular Solids,Ministry of Education,Anhui Normal University,Wuhu 241000,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第8期1055-1060,970,共7页结构化学（英文）

基　　金：supported by the Natural Science Foundation of Anhui Province(No.2008085ME174);financial support from Anhui Normal University(FMS201915)。

摘　　要：Rare-earth metal dialkyl complexes[1-Bn-3-(DippN=CH)C_(8)H_(4)N]RE(CH_(2)SiMe_(3))2(thf)2(Dipp=2,6-iPr_(2)C_(6)H_(3),RE=Y(1)and Er(2))were prepared through the cyclometalation reactions of the N-Bn-3-imino-functionalized indolyl ligand 1-Bn-3-(DippN=CH)C8H5N with one equivalent of rare-earth metal trialkyl precursors.The structures of compounds 1 and 2 were confirmed by X-ray crystal analyses and characterized by elemental analysis,IR,NMR spectroscopy wherein applicable.In the presence of cocatalysts,these rare-earth metal dialkyl complexes initiated isoprene polymerization with a high activity(95% conversion of 2000 equivalent of isoprene in 360 min),producing polymers with high regioselectivity(1,4-polymers up to 91%).

关 键 词：indolyl ligand rare-earth metal dialkyl complex ISOPRENE POLYMERIZATION 

分 类 号：O641.4[理学—物理化学]