Synthesis and structural characterization of novel three carbon atom bridged ansa-bis(indenyl)zirconocene complexes: Applications in ethylene polymerization
作者:Dorian Polo-Cerón、Santiago Gómez-Ruiz、Jesús Ceballos-Torres、Sanjiv Prashar、Mariano Fajardo、Manuel L. Reyes
DOI:10.1016/j.poly.2014.02.033
日期:2014.9
(R = Me (7), Et (8), Pr (9)) have been prepared by the reaction of the corresponding lithium indene, Li(C9H6R-1) (R = Me (4), Et (5), Pr (6)), with 1,3-dibromopropane. Compounds 7–9 were converted, by the reaction with butyllithium, to the dilithium compounds, Li2CH2CH2CH2(C9H5R-3)2} (R = Me (10), Et (11), Pr (12)). The three carbon atom bridge ansa-bis(indenyl)zirconium complexes, [ZrCH2CH2CH2(η5-C9H5R-3)2}Cl2]
所述柄茚基配体前体CH 2 CH 2 CH 2(C 9 H ^ 6 R)2(R =我(7),等(8),PR(9))已经制备由相应的锂茚,Li的反应(C 9 H 6 R-1)(R = Me(4),Et(5),Pr(6)),带有1,3-二溴丙烷。化合物7 - 9进行了改装,通过与丁基锂的反应中,以二锂化合物,锂2 CH 2 CH 2 CH2(C 9 H 5 R-3)2 }(R = Me(10),Et(11),Pr(12))。三个碳原子的桥,柄-双(茚基)锆络合物,[Zr的CH 2 CH 2 CH 2(η 5 -C 9 ħ 5 R-3)2 }氯2 ](R =我(13),等(14)Pr(15))是由10 – 12与四氯化锆反应合成的。化合物13 – 15已被测试为乙烯聚合中的均相催化剂。14和15的分子结构已通过单晶X射线衍射研究确定。