作者:Michael I. Bruce、Paul J. Low、Anja Werth、Brian W. Skelton、Allan H. White
DOI:10.1039/dt9960001551
日期:——
The complexes [Mo2(µ-η2-Me3SiC2CCSiMe3)(CO)4(cp)2], [Pt(η2-Me3SiC2CCSiMe3)(PPh3)2] and Ru3(µ3-η2-Me3SiC2CCSiMe3)(µ-CO)(CO)9] have been prepared. Further reaction of the first with [Co2(CO)8] gives [Mo2(CO)4(cp)2}Co2(CO)6}(µ-η2:µ-η2-Me3SiC2C2SiMe3)]. Desilylation of [Co2(µ-η2-Me3SiC2CCSiMe3)-(µ-dppm)n(CO)6 – 2n](n= 0 or 1, dppm = Ph2PCH2PPh2) gave [Co2(µ-η2-RC2CCH)(µ-dppm)n(CO)6 – 2n](n= 0, R = H; n= 1, R = SiMe3 or H). The first dppm complex adds across the M–M bonds in [Re2(CO)8-(NCMe)2] and [Ru3(CO)12] to give [Re2(µ-H)µ-η1:η2;µ-η2-C2C2SiMe3[Co2(µ-dppm)(CO)4]}(CO)8] and [Ru3(µ-H)µ3-η1:η2;µ-η2-C2C2SiMe3[Co2(µ-dppm)(CO)4]}(CO)9], respectively, while both dppm complexes react with [WCl(CO)3(cp)] to give [Co2µ-η2-RC2CC[W(CO)3(cp)}(µ-dppm)(CO)4](R = H or SiMe3). Auration of the HC2C2SiMe3 complex with [AuCl(PPh3)]–1,8-diazabicyclo[5.4.0]undec-7-ene gave [Co2µ-η2-Me3SiC2CC[Au(PPh3)]}(µ-dppm)(CO)4]. Addition of HCCCCSiMe3 to [Ru3(µ-dppm)2(CO)8] gave [Ru3(µ-H)(µ3-η1:η2-C2CCSiMe3)(µ-dppm)2(CO)5]. The complex [Os3(CO10(NCMe)2] reacts with HCCCCSiMe3 to give isomers of [Os3(µ3-η2-HC2C2SiMe3)(µ-CO)(CO)9]; the mixture reacts with [Co2(CO)8] to give one isomer of [Os3µ3-η2;µ-η2-HC2C2SiMe3[Co2(CO)6]}(µ-CO)(CO)9] in which the Co2 moiety bridges the CCSiMe3 portion of the diyne. The crystal structures of five of the complexes have been determined.
制备了配合物[Mo2(µ-η2-Me3SiC2CCSiMe3)(CO)4(cp)2]、[Pt(η2-Me3SiC2CCSiMe3)(PPh3)2]和[Ru3(µ3-η2-Me3SiC2CCSiMe3)(µ-CO)(CO)9]。第一个配合物与[Co2(CO)8]进一步反应得到[Mo2(CO)4(cp)2}Co2(CO)6}(µ-η2:µ-η2-Me3SiC2C2SiMe3)]。[Co2(µ-η2-Me3SiC2CCSiMe3)-(µ-dppm)n(CO)6 – 2n](n= 0或1,dppm = Ph2PCH2PPh2)的脱硅作用得到[Co2(µ-η2-RC2CCH)(µ-dppm)n(CO)6 – 2n](n= 0,R = H;n= 1,R = SiMe3或H)。第一个dppm配合物与[Re2(CO)8-(NCMe)2]和[Ru3(CO)12]中的M–M键加成,分别得到[Re2(µ-H)µ-η1:η2;µ-η2-C2C2SiMe3[Co2(µ-dppm)(CO)4]}(CO)8]和[Ru3(µ-H)µ3-η1:η2;µ-η2-C2C2SiMe3[Co2(µ-dppm)(CO)4]}(CO)9],而两个dppm配合物都与[WCl(CO)3(cp)]反应得到[Co2µ-η2-RC2CC[W(CO)3(cp)}(µ-dppm)(CO)4](R = H或SiMe3)。HC2C2SiMe3配合物与[AuCl(PPh3)]–1,8-diazabicyclo[5.4.0]undec-7-ene反应得到[Co2µ-η2-Me3SiC2CC[Au(PPh3)]}(µ-dppm)(CO)4]。HCCCCSiMe3添加到[Ru3(µ-dppm)2(CO)8]得到[Ru3(µ-H)(µ3-η1:η2-C2CCSiMe3)(µ-dppm)2(CO)5]。配合物[Os3(CO10(NCMe)2]与HCCCCSiMe3反应生成[Os3(µ3-η2-HC2C2SiMe3)(µ-CO)(CO)9]的异构体;混合物与[Co2(CO)8]反应得到一种异构体,即[Os3µ3-η2;µ-η2-HC2C2SiMe3[Co2(CO)6]}(µ-CO)(CO)9],其中Co2部分桥连二炔的CCSiMe3部分。确定了其中五种配合物的晶体结构。