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Keywords:

  • C[BOND]H activation;
  • dimetallic compounds;
  • iridium;
  • N-heterocyclic carbenes;
  • rhodium
Thumbnail image of graphical abstract

Two-headed carbenes: N-heterocyclic carbene complexes of rhodium and iridium were obtained by the double C[BOND]H activation of CH2 groups in N heterocycles (see structure: C gray, N blue, Cl green, Ir pink). The reaction constitutes a valuable approach to new carbene ligands with unprecedented architectures.