Stoichiometric and catalytic activation of sp2 C−H bonds: molecular structure of Os3(μ-H)(μ3-nBuOC=CHPEt2)(CO)9 and catalytic properties of this and related Os and Ru clusters
作者:Alexander Z. Voskoboynikov、Marina A. Osina、Alla K. Shestakova、Marina A. Kazankova、Inna G. Trostyanskaya、Irina P. Beletskaya、Fedor M. Dolgushin、Alexander I. Yanovsky、Yuri T. Struchkov
DOI:10.1016/s0022-328x(97)00223-4
日期:1997.1
The thermal reaction of nBuOCH=CHPEt2 with Os3(CO)12 gives a new osmium triangular cluster, Os3(μ-H)(μ3-nBuOC=CHPEt2)(CO)9 (1), which was isolated in 62% yield. The structure of 1 has been determined by X-ray diffraction (P1¯, a = 12.914(3), b = 13.984(4), c = 16.375(4) Å, α = 66.83(2), β = 77.82(2), γ = 77.97(2)°, Z = 4, dcalc = 2.552 g/cm3, R = 0.0399 for 6636 reflections). The μ3-nBuOC=CHPEt2 in
的热反应Ñ BuOCH = CHPEt 2使用OS 3(CO)12提供了一种新锇三角形簇,锇3(μ-H)(μ 3 - ñ BuOC = CHPEt 2)(CO)9(1),这是分离,收率为62%。1的结构已通过X射线衍射确定(P1 ,a = 12.914(3),b = 13.984(4),c = 16.375(4)Å,α = 66.83(2),β = 77.82(2 ),γ= 77.97(2)°,Z = 4,d calc = 2.552 g / cm 3,R=对于6636反射为0.0399)。该μ 3 - ñ BuOC = CHPEt 2在1用作五电子供体。它与一个Os原子形成σ键,并分别通过其烯键和磷原子与簇中的第二个和第三个Os原子配位。配合物1和Os 3(μ-H)(μ-CH= CHR)(CO)10(R = n C 6 H 13,Ph)都催化末端烯烃与Et 3 SiH的甲硅烷基化反应生成