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      2-Ferrocenyl-substituted pyrylium ions from coupling of ethynylferrocene with cyclomanganated chalcones

      Prasad, Narendra Jai; Main, Lyndsay; Nicholson, Brian K.; McAdam, C. John
      DOI
       10.1016/j.jorganchem.2010.05.006
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      Prasad, N., Main, L., Nicholson, B.K. & McAdam, C.J. (2010). 2-Ferrocenyl-substituted pyrylium ions from coupling of ethynylferrocene with cyclomanganated chalcones. Journal of Organometallic Chemistry, 695(17), 1961-1965.
      Permanent Research Commons link: https://hdl.handle.net/10289/4086
      Abstract
      2-Ferrocenyl-substituted pyrylium salts are produced when orthomanganated chalcones are reacted with ethynylferrocene in CCl4. When the reaction is carried out in benzene, intermediate ferrocenyl-substituted (η5-pyranyl)Mn(CO)3 species can be isolated which give the pyrylium cations on oxidation. The electrochemistry of the 2-ferrocenyl-pyrylium cations shows both oxidation (of the ferrocenyl) and reduction (of the pyrylium) processes, and the UV–visible spectra show a broad band at ca 680 nm which can be assigned to an intramolecular charge transfer transition.
      Date
      2010
      Type
      Journal Article
      Publisher
      Elsevier
      Collections
      • Science and Engineering Papers [3073]
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