A new synthetic route to high-valent half-sandwich group 4 metallacarborane alkyls. Synthesis and structural characterization of [eta(1):eta(6)-(Me2NCH2CH2)C2B10H11]Hf(CH2SiMe3)(2)

摘要

A half-sandwich group 4 metallacarborane alkyl was prepared and structurally characterized for the first time via an alkane elimination reaction of Hf-(CH2SiMe3)(4) with the zwitterionic salt Me2NHCH2CH2C2B10H12. This method avoids using the strong reducing agents [nido-R2C2B10H10]M-2 (M = group 1 metal) as starting materials, which allows the synthesis of high-valent group 4 metallacarboranes of the C2B10 system.