Organosilicon chemistry. Part 23. Some silylcobalt(III) complexes and the homogeneous catalysis of deuteriation, hydrosilylation, and O-silylation reactions
作者:Nicholas J. Archer、Robert N. Haszeldine、R. V. (Dick) Parish
DOI:10.1039/dt9790000695
日期:——
The complexes [CoH(X2)L3](X = H or N; L = PPh3) react with silanes, SiR3H, to give the new silylcobalt(III) complexes [CoH2(SiR3)L3][R3= F3, MeF2, or (OEt)3]. The characterization of these complexes and their reactions with N2, H2, HCl, CCl4, and CO are described. With CO the new cobalt(I) silyl [Co(SiF3)(CO)2L2] is formed. The stability of the silyls to loss of SiR3H decreases as the electronegativity
配合物[CoH(X 2)L 3 ](X = H或N; L = PPh 3)与硅烷SiR 3 H反应,生成新的甲硅烷基钴(III)配合物[CoH 2(SiR 3)L 3 ] [R 3= F 3,MeF 2或(OEt)3 ]。描述了这些配合物的特征及其与N 2,H 2,HCl,CCl 4和CO的反应。有了CO,新的钴(I)甲硅烷基[Co(SiF 3)(CO)2 L 2] 形成了。R的电负性降低时,甲硅烷基对SiR 3 H损失的稳定性降低,这使得较不稳定的配合物参与催化过程。SiR 3 H与D 2(R = F,OEt,Et或Me),SiH(OEt)3或Me 3 Si [OSi(H)Me] n OSiMe 3与EtOH和SiH(OEt)的反应)3与1-己烯是通过[COH(X催化2)L- 3 ]或由[治疗之环2 的Si(OET)3 } L 3 ]。氘代反应为氘代硅烷SiR 3 D提供了容易的路线。