Photochemical Reaction of CpFe(CO)2SiMe3 (Cp = η5-C5H5) with a Trihydrosilane Containing a Bulky Amino Substituent, Bis(trimethylsilyl)aminosilane
摘要:
A photochemical reaction between CpFe(CO)(2)SiMe3 and (Me3Si)(2)NSiH3 in hexane gave the silylyne-bridged triiron complex Cp3Fe3(CO)(4)SiN(SiMe3)(2) (2) and a diiron complex bridged by a four-membered cyclic silylene, Cp2Fe2(CO)(2)(mu-CO)(mu-SiN(SiMe3)(2)SiMe2CH2) (3). In contrast, the silylene- and alkyne-bridged triiron complex Cp3Fe3{mu(2)-SiHN(SiMe3)(2)}{mu(3)-COSiH2N(SiMe3)(2)}{mu(3)-eta(2)-C2O2-SiHN(SiMe3)(2)} (4) was formed as the main product by a similar reaction in toluene.
Aminoderivate hydrierter Oligosilane: Darstellung, Charakterisierung und Eigenschaften
摘要:
Amino derivatives of linear and branched tri- und tetrasilanes R2N-H2Si(SiH2)SiH2-NR2 H3SiSiHNR2SiHNR2SiH3, R2N-H2SiSiH2SiH2SiH2-NR2 und (R2N-H2Si)2SiHSiH(SiH2-NR2)2 with R = Et, SiMe3 are formed by the reaction of the corresponding bromooligosilanes with suitable amines or alkali metal amides. Product distribution and yields are strongly influenced by the nucleophilicity of the amino reagent and by the structure of the SiSi-backbone. The structures proposed for the aminopolysilanes thus prepared are proved by Si-29-, H-1-NMR- and MS-investigations.