Metathesis between E-C(spⁿ ) and H-C(sp³ ) σ-Bonds (E=Si, Ge; n=2, 3) on an Osmium-Polyhydride.

ABSTRACT: The silylation of a phosphine of OsH₆ (Pⁱ Pr₃ )₂ is performed via net-metathesis between Si-C(spⁿ ) and H-C(sp³ ) σ-bonds (n=2, 3). Complex OsH₆ (Pⁱ Pr₃ )₂ activates the Si-H bond of Et₃ SiH and Ph₃ SiH to give OsH₅ (SiR₃ )(Pⁱ Pr₃ )₂ , which yield OsH₄ {κ¹ -P,η² -SiH-[ⁱ Pr₂ PCH(Me)CH₂ SiR₂ H]}(Pⁱ Pr₃ ) and R-H (R=Et, Ph), by displacement of a silyl substituent with a methyl group of a phosphine. Such displacement is a first-order process, with activation entropy consistent with a rate determining step occurri

SUBMITTER: Esteruelas MA 

PROVIDER: S-EPMC9401005 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature