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Keywords:

  • bond theory;
  • cluster compounds;
  • density functional calculations;
  • disproportionation;
  • germanium
Thumbnail image of graphical abstract

Starting from germanium(I) bromide, which can be obtained by preparative co-condensation, the first polyhedral Ge cluster [Ge8{N(SiMe3)2}6] (see picture) has been synthesized in which the average oxidation state of all the Ge atoms in the cluster core lies between 0 and +1.