Synthesis, characterization and catalytic behaviour of ansa-zirconocene complexes containing tetraphenylcyclopentadienyl rings: X-ray crystal structures of [Zr{Me2Si(η5-C5Ph4)(η5-C5H3R)}Cl2] (R=H, But)
作者:Santiago Gómez-Ruiz、Dorian Polo-Cerón、Sanjiv Prashar、Mariano Fajardo、Vı´ctor L. Cruz、Javier Ramos、Evamarie Hey-Hawkins
DOI:10.1016/j.jorganchem.2007.11.054
日期:2008.2
ansa-bis(cyclopentadiene) compounds, Me2Si(C5HPh4)(C5H4R) (R = H (2); But (3)), have been prepared by the reaction of C5HPh4(SiMe2Cl) (1) with Na(C5H5) or Li(C5H4But), respectively, and transformed to the di-lithium derivatives, Li2Me2Si(C5Ph4)(C5H3R)} (R = H (4); But (5)), by the action of n-butyllithium. The ansa-zirconocene complexes, [ZrMe2Si(η5-C5Ph4)(η5-C5H3R)}Cl2] (R = H (6); But (7)), were synthesized
所述柄型-双(环戊二烯)的化合物中,Me 2的Si(C 5 HPH 4)(C 5 H ^ 4 R)(R = H(2);卜吨(3)),制备由C的反应5 HPH 4(SiMe 2 Cl)(1)分别具有Na(C 5 H 5)或Li(C 5 H 4 Bu t),并转化为二锂衍生物Li 2 Me 2 Si(C 5 Ph 4 C 5H 3 R)}(R = H(4); Bu t(5)),通过正丁基锂的作用。所述柄-zirconocene络合物,[Zr的我2的Si(η 5 -C 5博士4)(η 5 -C 5 H ^ 3 R)}氯2 ](R = H(6);卜吨(7)), ZrCl 4与4或5的反应分别合成了三价铬。化合物6和7已经乙烯的聚合中进行了测试,并与它们的甲基取代的类似物,[Zr的我比较2的Si(η 5 -C 5我4)(η 5 -C 5 H ^ 3 R)}氯2 ](R = H (8);卜吨(9