Reactions of Fe3(CO)12 and Fe(CO)5 with functionalized alkynes in CH3OH-KOH solution - The crystal structure of Fe2(CO)6(PPh3)[μ-η3- (H2CCCH2)]

Giuliana Gervasio, Domenica Marabello, Enrico Sappa, Andrea Secco

Research output: Contribution to journalArticlepeer-review

Abstract

The complex Fe2(CO)7(H2CCCH2) (1) is obtained starting from a variety of functionalized alkynes that can release C3 fragments during the reactions with Fe3(CO) 12 or Fe(CO)5 in CH3OH-KOH solutions. Owing to the oily nature of 1, it was reacted with triphenylphosphine, and the structure of the resulting title compound (1a) has been determined by X-ray analysis. Complex 1a shows a new coordination mode of a H2C=C=CH2 ligand to a diiron centre and is, to our knowledge, unprecedented. We have also found that 1 (and 1a) are by-products, and not intermediates in the formation of complex 3. A discussion of the possible reaction pathways is given.

Original languageEnglish
Pages (from-to)337-344
Number of pages8
JournalCanadian Journal of Chemistry
Volume84
Issue number2
DOIs
Publication statusPublished - Feb 2006
Externally publishedYes

Keywords

  • Acetyl and acetate complexes
  • Alkynols
  • Allenyl iron complexes
  • CO and methanol activation
  • Crystal structure
  • Iron carbonyls

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