Zur Strukturchemie ternärer Telluride der Alkali- und Erdalkalimetalle mit den Elementen der 3. Hauptgruppe / On the Structural Chemistry of Ternary Tellurides of Alkali- and Earthalkalimetalls with the Group- (III) -Elements

Abstract

The new compounds SrAl₂Te₄, SrGa₂Te₄, SrIn₂Te₄, BaAl₂Te₄, BaGa₂Te₄, BaIn₂Te₄, Ba₇Al₆Te₁₆, NaInTe₂ and KInTe₂ have been prepared by melting together stoichiometric amounts of the elements. All compounds crystallize tetragonal in variants of the TlSe- (B 13) -structure. SrAl₂Te₄: α = 8.25 Å, c = 6.72 Å ( ± 0.02 Å) SrGa₂Te₄: α = 8.21 Å, c = 6.75 Å ( ± 0.02 Å) SrIn₂Te₄: α = 8.27 Å, c = 7.22 Å ( ± 0.02 Å) BaAl₂Te₄: α = 8.50 Å, c = 6.72 Å ( ± 0.02 Å) BaGa₂Te₄: α = 8.42 Å, c = 6.78 Å ( ± 0.02 Å) BaIn₂Te₄: α = 8.44 Å, c = 7.20 Å ( ± 0.02 Å) NaInTe₂: α = 8.33 Å, c = 7.27 Å ( ± 0.02 A) KInTe₂: α = 8.52 Å, c = 7.39 Å ( ± 0.02 A) Ba₇Al₆Te₁₆: α = 34.24 Å, c = 6.70 Å ( ± 0.02 Å) (=4 × 8.57 Å),