μ3-silylidin- und μ3-germylidin-heterometall-cluster

Reactions of Hydrosilanes with Transition-Metal Complexes: Formation of Stable Transition-Metal Silyl Compounds

“…Table − summarizes the products isolated from reactions of primary silanes, RSiH 3 , with transition-metal complexes. Most investigations with primary silanes involve R = aryl, since the low molecular weight alkyl compounds (R = Me, Et, Pr) are gases at 25 °C and thus require more specialized handling.…”

[(μ2-CO)Cp2(OC)2Fe2][Cp(OC)2Fe]SiH: A SiH-Functionalized Tris(metallo)silane. Synthesis from [Cp(OC)2Fe]2SiH21

“…A more effective access to SiH 3 and even Si 2 H 5 metal complexes involves Cl/H exchange at the silicon of the corresponding metallo-chlorosilanes L n M−Si(R)Cl 2 (R = H, Cl, SiCl 3 ; L n M = Cp(OC)(L)Fe, Cp(OC) 2 Ru, Cp(OC) 2 (Me 3 P)W; L = CO, PR 3 ), a process which allows us to study the chemistry of these special silyl complexes in a broader range. In this context, it has been demonstrated that the metal-bound SiH 3 group is a valuable synthetic tool for the generation of metallo-silanetriols via oxygenation reactions, or silylidyne metal clusters with the silicon surrounded by a maximum of four transition-metal groups. 2a, Application of a Cl/H exchange reaction for the generation of SiH 2 -bridged dinuclear complexes L n M−SiH 2 −ML n is an attractive goal, since the known synthetic procedure for these species involves volatile silicon reagents requiring special synthetic procedures: e.g., the dihalosilanesH 2 SiX 2 (X = Cl, I), the metalation of which yields the (OC) 4 Co-, Cp(OC) 2 Fe- and (OC) 5 Mn-substituted , derivatives. Other preparations involve the reaction of KSiH 3 with Cp 2 TiCl 2 , leading to (μ 2 -SiH 2 )(TiCp 2 ) 2 , or of SiH 4 with (C 5 Me 5 )Mn(CO) 2 (THF), yielding [C 5 Me 5 (OC) 2 Mn(H)] 2 SiH 2 .…”