Reduction of cationic P-coordinated (diphenylphosphino)alkyne iron complexes with sodium borohydride

Elmostafa Louattani, Joan Suades

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9 Citations (Scopus)


The reaction of cationic complexes [(η5-C5H5)Fe(CO)2(PPh 2CCR)]+ (R=H, Me, tBu, Ph, Tol) with NaBH4 at -78°C in THF yielded the neutral complexes [(η4-C5H6)Fe(CO)2(PPh 2CCR)], which were characterized by elemental analysis, and NMR and IR spectroscopy. This result is consistent with the idea that the electrophilic character of the cation [(η5-C5H5)Fe(CO)2(PPh 2CCR)]+ is mainly located on the [(η5-C5H5)Fe(CO)2] fragment and the polarization of the alkyne does not change the direction of the nucleophilic attack with respect to the cation [(η5-C5H5)Fe(CO)2(PPh 3)]+. The comparison between spectroscopic data of cationic and neutral complexes supplies new information about the influence of metal on the alkyne function in P-coordinated (diphenylphosphino)alkynes. © 1999 Elsevier Science S.A.
Original languageEnglish
Pages (from-to)207-211
JournalInorganica Chimica Acta
Issue number1-2
Publication statusPublished - 1 Aug 1999


  • Cyclopentadienyl complexes
  • Iron complexes
  • Phosphinoalkyne complexes


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