Zintlphasen mit komplexen Anionen: Ge₂P₄ ^6-- bzw. Si₂As₄ ^6--Ketten verbände im Ca₃Ge₂P₄ und Sr₃Ge₂P₄ bzw. Ba₃Si₂As₄ / Zintl Phases with Complex Anions: Ge₂P₄ ^6-- and Si₂As₄ ⁶- Chains in Ca₃Ge₂P₄, Sr₃Ge₂P₄ and Ba₃Si₂As₄, Respectively

Abstract

The new compounds Ca 3 Ge 2 P 4 , Sr 3 Ge 2 P 4 and Ba 3 Si 2 As 4 crystallize in the inonoclinic system with the following lattice constants: The two different structure types correspond to different kinds of connection of Ge 2 P 6 and Si 2 As 6 units, respectively, to chains. In both cases these chains are ordered parallel to each other to layers between which the alkaline earth atoms are located