New bridging tridentate bis-cyclopentadienyl ligands [C5Me4(CH2)n]2PPh (n=1, 2) for organometallic synthesis

被引：0

作者：

Krut'ko, D. P. ^{[1
]}

Kirsanov, R. S. ^{[1
]}

Borzov, M. V. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2007年 / 56卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

phosphanediyl-containing bis-cyclopentadienyl ligands; zirconium; NMR spectroscopy;

D O I：

10.1007/s11172-007-0285-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Preparative procedures were developed for the synthesis of new transmethylated bis-cyclopentadienyl ligands with phosphine-containing bridging fragments. These ligands were isolated as the dilithium salts Li-2[(C5Me4CH2)(2)PPh] (1) and Li-2[(C5Me4CH2CH2)(2)PPh] (3). Phosphorus-substituted 3-ansa-zirconocene dichloride [(C5Me4CH2)(2)PPh]ZrCl2 was synthesized starting from 1. The NMR spectroscopic data provide evidence for the absence of the Zr P coordination interaction in solution. A straightforward approach to 5-ansa-zirconocene dichloride [(C5Me4CH2CH2)(2)PPh]ZrCl2 starting from lithium salt 3 and ZrCl4 was shown to be impossible.

引用

页码：1838 / 1842

页数：5

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