Aminozirconocenes: A new class of zirconocenes with a nitrogen atom directly bonded to an eta(5)-cyclopentadienyl(indenyl) ligand

被引:36
作者
Plenio, H
Burth, D
机构
[1] Inst. Anorganische und Analyt. Chem., Albertstr, 21, 79104, Freiburg
关键词
zirconocenes; X-ray crystal structure; aminocyclopentadiene; zirconium; cyclopentadienyl;
D O I
10.1016/S0022-328X(96)06254-7
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reactions of 2-indanone or 3,4-diphenylcyclopent-2-enone with pyrrolidine and N,N'-dimethylethylenediamine respectively lead to the corresponding 2-aminoindenes and 1-amino-3,4-diphenylcyclopentadienes, whose lithium salts can be reacted with ZrCl4 to generate the corresponding moisture-sensitive aminozirconocene dichlorides. The X-ray crystal structure of di-(2-N-pyrrolidine-eta(5)-indenyl)zirconium dichloride was determined, in which the zirconocene exists exclusively as a racemic-mixture, whereas the meso-rotamer is not present. The (indenyl)carbon-nitrogen bond lengths range from 132.5(7) to 134.9(8) pm, which is indicative of considerable multiple bond character.
引用
收藏
页码:269 / 272
页数:4
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