Formation and Reactivity of a Hexahydridosilicate [SiH₆ ]^2- Coordinated by a Macrocycle-Supported Strontium Cation.

ABSTRACT: The cationic benzyl complex [(Me₄ TACD)Sr(CH₂ Ph)][A] (Me₄ TACD=1,4,7,10-tetramethyltetraazacyclododecane; A=B(C₆ H₃ -3,5-Me₂ )₄ ) reacted with two equivalents of phenylsilane to give the bridging hexahydridosilicate complex [(Me₄ TACD)₂ Sr₂ (thf)₄ (μ-κ³  : κ³ -SiH₆ )][A]₂ (3 a). Rapid phenyl exchange between phenylsilane molecules is assumed to generate monosilane SiH₄ that is trapped by two strontium hydride cations [(Me₄ TACD)SrH(thf)_x ]⁺ . Complex 3 a decomposed in THF at room temperature to give the terminal silanide complex [(Me₄ TACD)Sr(SiH₃ )(thf)_2</

SUBMITTER: Hollerhage T 

PROVIDER: S-EPMC9303417 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature