Sterically loaded zirconocene complexes - First example for a sigma-bound fluorenyl ligand

被引：17
|
作者：
Schmid, MA [1 ]
Alt, HG [1 ]
Milius, W [1 ]
机构：
[1] UNIV BAYREUTH,ANORGAN CHEM LAB,D-95440 BAYREUTH,GERMANY
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1997年 / 541卷 / 1-2期
关键词：
zirconium; metallocene; eta(1)-Fluorenyl; dynamic molecules; H-1; NMR; x-ray structure;
D O I：
10.1016/S0022-328X(96)06471-6
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The reaction of Cp2ZrCl2 (Cp = eta(5)-C5H5) with one or two equivalents of fluorenyl lithium (C13H9Li) results in the formation of the mono and disubstitution products Cp2Zr(eta(1)-C13H9)Cl and Cp2Zr(eta(1)-C13H9)(2). The corresponding Cp' derivative (Cp' = eta(5)-C5H4Me) gives analogous products. Instead of fluorenyl lithium, 2,7-di(methyl) fluorenyl lithium can also be applied in the reaction. The eta(1) bonding mode of the fluorenyl ligand in Cp2Zr(eta(1)-C13H9)Cl could be demonstrated by an X-ray structure. The dynamic behaviour of the cyclopentadienyl ligands in the products is described by temperature-dependent H-1 NMR spectroscopy.
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页码：3 / 7
页数：5
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