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Keywords:

  • boron;
  • borylene ligands;
  • cycloaddition;
  • density functional calculations;
  • iron
Thumbnail image of graphical abstract

Charge changes everything: The cationic terminal aminoborylene complex [CpFe(CO)2(BNCy2)]+[BArF4] (1, Cy= cyclohexyl, ArF=3,5-(CF3)2C6H3; Fe orange, B green, N blue, O red, C gray) was structurally characterized. DFT studies (see HOMO−2) indicate delocalized π bonding along the linear Fe-B-N framework and significant Fe[BOND]B and B[BOND]N multiple-bond character.