Unsymmetrically substituted butenynyl-iron(ii) complexes

Leslie D. Field, Alison M. Magill, Stuart R. Pike, Anthony J. Turnbull, Scott J. Dalgarno, Peter Turner, Anthony C. Willis

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17 Citations (Scopus)


The preparation and characterisation of iron(II) complexes bearing unsymmetrically 1,4-disubstituted n?3-butenynyl ligands, cis-[Fe(C(C=CR)=C(H)R')(dmpe)2][PF6] (e.g. R = tBu, R' = Ph 2e; R = Ph, R' = tBu 2e') are reported. The complexes were obtained as a mixture by protonation and rearrangement of the bis(acetylido)iron(II) complex trans-Fe(CCPh)(CCtBu)(dmpe)2. The complexes 2e and 2e' were separated by crystallisation and were both characterised, crystallographically. In addition, a number of complexes with symmetrically 1,4-disubstituted butenynyl ligands cis[Fe(C(C=CR)=C(H)R)(dmpe)2][PF6] (R = p-C6H4-OMe 2a; pC6H4-Me 2b, C 6H3-3,5-(CF3)2 2c; 1-adamantyl 2d) were synthesized by protonation and rearrangement of the corresponding bis(acetylido)iron(II) complexes. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original languageEnglish
Pages (from-to)2406-2414
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number16
Publication statusPublished - Jun 2010


  • Enynes
  • Iron
  • Phosphane ligands
  • Rearrangement


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