Synthesis and Reactivity of the Osmate(0) Complexes M[Os(CO)2(η-C5R5)] (M = Li, Na; R = H, Me): Versatile Synthons for Synthesis of Organoosmium Complexes

Yasuro Kawano, Hiromi Tobita, Hiroshi Ogino

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The anionic osmium complex Li[Os(CO2)(η-C5Me5)] (2a) was synthesized by the reaction of the hydrido complex (η-C5Me5Os(CO2)H (3a) with n-BuLi. The unsubstituted cyclopentadienyl derivatives M[Os(CO)2(η-C5H5)] (2b,M = Li; 2c, M = Na) were also prepared by an identical method or by two-electron reduction of (η-C5H5Os(CO)2I with sodium naphthalenide. Reactions of 2a with various electrophiles (CH3I, D2O, Me3SiCl, tBuSiH2Cl, Me3SiSiMe2Cl, Me2SiCl2, and Me3GeCl) afforded the nucleophilic substitution products (η-C5Me5)Os(CO)2R (R = CH3, D, SiMe3, SiH2tBu, SiMe2SiMe3, SiClMe2, and GeMe3) in good to excellent yields. Analogous products were also obtained by the reaction of 2b with tBuSiH2Cl and by the reactions of 2c with tBuSiH2Cl and tBuSiHCl2.

Original languageEnglish
Pages (from-to)3849-3853
Number of pages5
JournalOrganometallics
Volume13
Issue number10
DOIs
Publication statusPublished - 1994 Oct 1

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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