SOME NEW BUT-2-YNE PHOSPHINE COMPLEXES OF TUNGSTEN(II)

被引：9

作者：

BAKER, PK

JACKSON, PD

机构：

[1] Department of Chemistry, University of Wales, Bangor

来源：

INORGANICA CHIMICA ACTA | 1994年 / 219卷 / 1-2期

关键词：

TUNGSTEN COMPLEXES; ALKYNE COMPLEXES; PHOSPHINE COMPLEXES;

D O I：

10.1016/0020-1693(94)03836-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two equivalents of L (L=PPh2Np (Np=napthyl) or trans-Ph2pCH=CHPPh2) or one equivalent of L L (L L=cis-Ph2PCH=CHPPh2, R(+)-Ph2P{CH(Me)CH2}PPh, or Me2P(CH2)2PMe2) react with [WI2(CO)(NCMe)(eta2-Me-C2Me)2].1/2CH2Cl2 in CH2Cl2 at room temperature to give [WI2(CO){L2 or L L}(eta2-MeC2Me)] (1-5) in high yield. Reaction of [WI2(CO){cis-Ph2PCH=CHPPh2}(eta2-MeC2Me)] with an equimolar quantity of NaSR (R=Et or CH2Ph) in CH2Cl2 at room temperature gave the thiolate complexes [WI(SR)(CO){cis-Ph2PCH=CHPPh2}(eta2-MeC2Me)] (6 and 7). Treatment Of [WI2(CO)(dmpe)(eta2-MeC2Me)] (dmpe=Me2P(CH2)2PMe2) with an equimolar amount of Ag[BF4] in NCMe gave the cationic complex [WI(CO)(NCMe)(dmpe)(eta2-MeC2Me)][BF4] (8) in high yield. The reactions of 8 with OC(NH2)2 and SC(NH2)2 are also described. The fluxionality of several of the complexes has been investigated by variable temperature H-1 NMR spectroscopy. C-13 NMR spectroscopy has been used to indicate the number of electrons donated to the tungsten in a number of these complexes.

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页码：99 / 105

页数：7

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