Über geordnete Perowskite mit Kationenfehlstellen. III. Ba2CeSb4/5□1/5O6, der erste Vertreter einer neuen Perowskitvariante

On Ordered Perovskites with Cationic Vacancies III. Ba₂CeSb_4/5□_1/5O₆, the First Representant of a New Perovskite Variant The lemon coloured Ba₂CeSb_4/5□_1/5O₆ is polymorphic. The HT modification has a cubic face centered (a = 8.53₉ Å) and the TT form a cubic primitive lattice (a = 8.53₁ Å). According to the density measurement there are 4 formula units of Ba₂CeSb_4/5□_1/5O₆ in the unit cell.