Inorganic Ligands Sb3- and Bi3-: Synthesis and Crystal Structures of Complexes with Mixed-Ligand Cluster Cores {Re4Se3Sb}7+ and {Re4Se3Bi}7.

The reactions of ReI3, Se, and KCN with Sb2O3 or Bi2O3 at elevated temperature led to the formation of two new tetrahedral clusters with mixed-ligand cluster cores {Re4Se3Sb}7+ and {Re4Se3Bi}7+. They are the first examples of complexes with either Sb3- or Bi3- ligands, which have never been previously described in the literature.