Sr14[Al4]2[Ge]3: Eine Zintl-Phase mit isolierten [Ge]4–- und [Al4]8–-Anionen / Sr14[Al4]2[Ge]3: A Zintl Phase with Isolated [Ge]4− and [Al4]8− Anions

  title={Sr14[Al4]2[Ge]3: Eine Zintl-Phase mit isolierten [Ge]4–- und [Al4]8–-Anionen / Sr14[Al4]2[Ge]3: A Zintl Phase with Isolated [Ge]4− and [Al4]8− Anions},
  author={Marco Wendorff and C. R{\"o}hr},
  journal={Zeitschrift f{\"u}r Naturforschung B},
  pages={1227 - 1234}
The new ternary intermetallic compound Sr14[Al4]2[Ge]3 was synthesized from stoichiometric ratios of the elements. The crystal structure (trigonal, space group R3̅, a = 1196.58(2), c = 4010.33(7) pm, Z = 6, R1 = 0.0574) was determined using single crystal X-ray data. The structure contains two crystallographically independent tetrahedral [Al4] anions with Al-Al distances in the range from 269.7 to 273.6 pm. Taking into account the Zintl concept and the isosteric analogy to white phosphorus… 
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