Structural characterization of alkyne and vinylidene isomers of [Ru(C2H2)(PMe2Ph)2(Cp)][BF4]
Structural characterization of alkyne and vinylidene isomers of [Ru(C2H2)(PMe2Ph)2(Cp)][BF4]
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[Ru(C2H2)(PMe2Ph)2(Cp)][BF4] 炔烃和亚乙烯基异构体的结构表征
DOI：
10.1021/ja00040a005
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发表时间：
1992
影响因子：
15
通讯作者：
J. Selegue
中科院分区：
文献类型：
--
作者：
Jeffrey R. Lomprey;J. Selegue
[RuCl（PMe 2 Ph）2（Cp）]与乙炔和TlBF 4在二氯甲烷中反应，得到了一种不寻常的d 6金属中心的η 2 -炔配合物[Ru（η 2 -HC = CH）-（PMe 2 Ph）（Cp）][BF 4 ]（2）.这种乙烯络合物在约100 ℃以上顺利地重排成它的亚乙烯基异构体[Ru（C=CH 2）（PMe 2 Ph）2（Cp）][BF 4 ]（4）。丙酮溶液中。η 2 -乙炔向亚乙烯基的转化也可以通过2的去质子化进行，得到[Ru（C = CH）（PMe 2 Ph）2（Cp）]（3），然后3的质子化，仅得到亚乙烯基异构体4
The reaction of [RuCl(PMe 2 Ph) 2 (Cp] with ethyne and TlBF 4 in dichloromethane leads to [Ru(η 2 -HC≡CH)-(PMew 2 Ph)(Cp)][BF 4 ] (2), an unusual η 2 -alkyne complex of a d 6 metal center. This ethylene complex smoothly rearranges to its vinylidene isomer,[Ru(C=CH 2 )(PMe 2 Ph) 2 (Cp)][BF 4 ] (4), above ca. 60 o C in acetone solution. The η 2 -ethyne to vinylidene conversion can also be carried out by deprotonation of 2 to give [Ru(C≡CH)(PMe 2 Ph) 2 (Cp)] (3), followed by protonation of 3 to give exclusively vinylidene isomer 4