Reactions of sterically congested secondary silanes with iron carbonyls. Formation of μ-silylene complexes Fe2(CO)8(μ-SiR2) (R = mesityl and O(2,6-iPr2C6H3))

Hiromi Tobita, Isao Shinagawa, Setsuko Ohnuki, Machiko Abe, Hiroshi Izumi, Hiroshi Ogino

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Reaction of dimesitylsilane with enneacarbonyldiiron in hot hexane yielded octacarbonyl(μ-dimesitylsilylene)diiron as thermally stable yellow crystals, for which the average bond lengths determined by X-ray crystallography are FeFe 2.721(2) and FeSi 2.404(2) Å, and the 29Si NMR chemical shift of the bridging silylene is 145.1 ppm. Similarly, the reaction of bis(2,6-diisopropylphenoxy)silane with dodecacarbonyltriiron in refluxing toluene afforded octacarbonyl{μ-bis(2,6-diisopropylphenoxy)silylene}di-iron, whereas a similar treatment of the slightly bulkier bis(2,6-di-tert-butylphenoxy)silane with enneacarbonyldiiron or dodecacarbonyltriiron did not give the corresponding μ-silylene complex.

Original languageEnglish
Pages (from-to)187-193
Number of pages7
JournalJournal of Organometallic Chemistry
Volume473
Issue number1-2
DOIs
Publication statusPublished - 1994 Jun 28

Keywords

  • Carbonyl
  • Iron
  • Secondary silanes
  • Silicon
  • X-ray diffraction
  • μ-Silylene

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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