First identification by EPR spectra of lanthanum(II) organometallic intermediates (and E-1/2 for La3+->La2+) in the C-O bond activation of dimethoxyethane

被引：0
|
作者：
Cassani, MC
Lappert, MF
Laschi, F
机构：
[1] UNIV SUSSEX,CHEM LAB,BRIGHTON BN1 9QJ,E SUSSEX,ENGLAND
[2] UNIV SIENA,DIPARTIMENTO CHIM,I-53100 SIENA,ITALY
来源：
CHEMICAL COMMUNICATIONS | 1997年 / 16期
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D O I：
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The reaction of [La(Cp '')(3)] with K in dimethoxyethane (dme) at ambient temperature leads to the formation of lanthanocene(III) methoxides via persistent paramagnetic lanthanum(rr) intermediates that are characterised by EPR spectroscopy and tentatively assigned to [K(dme)(x)]-[La(Cp '')(3)] and [La(Cp '')(2)(dme)(y)] [Cp ''=eta(5)-C5H3(SiMe3)(2)-1,3]; the cyclic voltammogram of [La(Cp '')(3)] in thf is also reported, E-1/2(red)=-2.8 V.
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页码：1563 / 1564
页数：2
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