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Keywords:

  • carbon monoxide;
  • cluster compounds;
  • gold;
  • isolobal relationships;
  • N-heterocyclic carbene ligands
Thumbnail image of graphical abstract

A triangular [L3Au3]+ ion is stabilized by an N-heterocyclic carbene ligand. In their Communication on page 12077 ff., T. G. Gray, J. P. Sadighi, and co-workers present the analogy between [L3Au3]+ and [H3]+. Density functional calculations suggest full valence delocalization among the gold atoms. In the presence of soft Lewis bases, the cluster undergoes two-electron oxidation to form three equivalents of AuI.