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Keywords:

  • bismuth;
  • gallium;
  • main-group elements;
  • metal–metal interactions;
  • reduction
Thumbnail image of graphical abstract

Bismuth goes GaGa: Dibismuthenes are derived from commercially available bismuth(III) triflate or aryloxide salts by employing [Ga(ddp)] (ddp=CH[MeC(2,6-iPr2C6H3)N]2) as an efficient reducing agent and trapping ligand. Apart from the shortest bismuth–bismuth bonds known to date, the compounds demonstrate the unique synthetic potential in main-group chemistry of low-coordinate Group 13 compounds analogous to N-heterocyclic carbenes.