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J Am Chem Soc. 2011 May 4;133(17):6560-2. doi: 10.1021/ja200520c. Epub 2011 Apr 8.

"n-Doping" of deltahedral Zintl ions.

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  • 1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.


We report a simple and efficient method for replacing germanium atoms in deltahedral Ge(9)(4-) clusters with Sb or Bi. While reactions of Ge(9)(4-) with EPh(3) (E = Sb, Bi) at room temperature are known to produce mono- and disubstituted clusters [Ph(2)E-Ge(9)-Ge(9)-EPh(2)](4-) and [Ph(2)E-Ge(9)-EPh(2)](2-), respectively, at elevated temperatures or with sonication they result in exchange of Ge cluster atoms with Sb or Bi. Structurally characterized from such reactions are the novel "n-doped" deltahedral Zintl ions [(EGe(8))-(Ge(8)E)](4-), (Sb(2)Ge(7))(2-), and [(SbGe(8))-SbPh(2)](2-).

© 2011 American Chemical Society

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