| | Abstract
| In a ligand exchange reaction betw een B H al, (Hal = Cl, Br) and the tetraalkylsilanes E t4Si, (M e,Si)2C H 2 or Ph2CH SiM e3 the alkylhaloboranes E tB B r2 or M eBH al: and the alkylhalosilanes E t,SiB r, H alM e2S i-C H 2-S iM e 3, (H alM e2Si)2C H 2, and Ph2CHSiM e2Br, respectively, are formed. Similarly, the methyloligosilanes (M e3Si)2 (1) and (M e,Si)2SiMe2 (2) react with BHal, (H al = Cl, Br, I) via m ethyl-halogen-transfer to give H alM e2Si—SiMe, (Hal = Cl, Br, I), (H alM e2Si)2 (Hal = Br, I), H alM e2Si —SiMe2—SiM e,, (M e,Si)2SiM eHal, HalM e2Si —SiMeHal —SiMe,, (H alM e2Si)SiMe2 (Hal = Cl, Br) or (B rM e2Si)2SiMeBr besides M eBHal2 (Hal = Cl, Br. I) and M e2BI, respectively. | |
