| Abstrakt: |
In a ligand exchange reaction between BHal3(Hal = Cl, Br) and the tetraalkylsilanes Et4Si, (Me3Si)2CH2or Ph2CHSiMe3the alkylhaloboranes EtBBr2or MeBHal2and the alkylhalosilanes Et3SiBr, HalMe2Si-CH2-SiMe3, (HalMe2Si)2CH2, and Ph2CHSiMe2Br, respectively, are formed. Similarly, the methyloligosilanes (Me3Si)2(1) and (Me3Si)2SiMe2(2) react with BHal3(Hal = Cl, Br, I) via methyl-halogen-transfer to give HalMe2Si-SiMe3(Hal = Cl, Br, I), (HalMe2Si)2(Hal = Br, I), HalMe2Si - SiMe2-SiMe3, (Me3Si)2SiMeHal, HalMe2Si - SiMeHal -SiMe3, (HalMe2Si)SiMe2(Hal = Cl, Br) or (BrMe2Si)2SiMeBr besides MeBHal2(Hal = Cl, Br, I) and Me2BI, respectively. |
