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Keywords:

  • ambiphilic ligands;
  • coordination modes;
  • dynamic exchange;
  • gallium;
  • zwitterions

Abstract

Thumbnail image of graphical abstract

Gallant exchange: Upon coordination of phosphanyl gallane ligands to AuCl, both neutral and zwitterionic complexes coexist. NMR spectroscopy provides direct evidence for the transfer of the chloride between gold and gallium in diphosphanyl gallane. The introduction of a third phosphanyl buttress allows the separation and structural characterization of the two coordination isomers (see picture; Au yellow, P red, Cl green, Ga blue).