A Short Bi[DOUBLE BOND]Bi Bond Supported by a Metalloid Group 13 Ligand


  • Organo Group 13 complexes of d-block elements 59. For 58, see: T. Cadenbach, C. Gemel, T. Bollermann, R. A. Fischer, Inorg. Chem.2009, 48, 5021–5026. G.P. is grateful for a stipend from the Alexander von Humboldt Foundation.


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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.