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Keywords:

  • bismuth;
  • gold;
  • hypervalence;
  • Lewis acids;
  • palladium
Thumbnail image of graphical abstract

BiZness as usual? Not exactly! The bismuth atom of the tridentate diphosphinobismuthine (o-(Ph2P)C6H4)2BiCl behaves as a Z rather than L ligand when in the coordination sphere of late transition metals such as gold. The σ-acceptor behavior of Bi is supported by its disphenoid coordination geometry and theoretical studies, which show a Au[RIGHTWARDS ARROW]Bi interaction.