PREPARATION AND CHEMICAL REACTIVITIES OF THE TUNGSTEN ALLENYL COMPLEX CPW(CO)3CH=C=CH2

被引：59

作者：

KENG, RS ^{[1
]}

LIN, YC ^{[1
]}

机构：

[1] NATL TAIWAN UNIV,DEPT CHEM,TAIPEI 10764,TAIWAN

来源：

ORGANOMETALLICS | 1990年 / 9卷 / 01期

关键词：

D O I：

10.1021/om00115a048

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The tungsten propargyl complex CpW(CO)3CH2C≡CH (1; Cp = η5 C5H5) readily converts to the η1-allenyl complex CpW(CO)3CH═C═CH2 (2) when dissolved in benzene or heated in CH3CN. A rough estimation of the energy of activation for such a process possibly indicates 1,3-tungsten sigmatropic rearrangement. The reaction of tetracyanoethylene with 1 or 2 occurs readily in both cases to give the complex CpW(CO)3C5H3(CN)4 (3) with a cyclopentene ring bonded to W in a η1 fashion. At 70 °C, complex 2 reacts with Fe2(CO)8(μ -CH2) to produce a tungsten-substituted trimethylenemethane iron carbonyl complex, CpW(CO)3(μ - η4-C4H5)Fe(CO)3 (4). The structure assignment of complex 4 is based on spectroscopic data. © 1990, American Chemical Society. All rights reserved.

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页码：289 / 291

页数：3

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