Eine Zintl-Phase mit isolierten SnSb₄ ^8-Anionen: Na₈SnSb₄ / A Zintl Phase with Isolated SnSb₄ ^8- -Anions, Na₈SnSb₄

Abstract

Abstract The new compound Na 8 SnSb 4 has been prepared from appropriate mixtures of the elements at 700 °C in evacuated silica ampoules coated with glassy carbon. The structure has been determined by single crystal X-ray diffraction data (cubic, space group Fd3m, a - 1481.6(3) pm, Z = 8, R = 0.044 for 263 reflections). There are isolated tetrahedral SnSb 4 8- units (bond length Sn -Sb = 284.3 pm), proving the compound to belong to the Zintl phases.