Information card for entry 1001275

Structure parameters

• Chemical name: POTASSIUM BARIUM SILICOTANTALATE *
• Formula: Ba1.5 K3 O26 Si4 Ta6
• Calculated formula: Ba1.5 K3 O26 Si4 Ta6
• Title of publication: Silicotantalates et siliconiobates non-stoechiometriques: les composes K~6-2x~ Ba~x~ Ta~6~ Si~4~ O~26~ (0<x<3) et K~8~ M~14~ Si~4~ O~47~ (M = Ta, Nb)
• Authors of publication: Choisnet, J; Nguyen, N; Raveau, B
• Journal of publication: Materials Research Bulletin
• Year of publication: 1977
• Journal volume: 12
• Pages of publication: 91 - 96
• a: 9.035 Å
• b: 9.035 Å
• c: 7.79 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 550.7 ų
• Number of distinct elements: 5
• Space group number: 189
• Hermann-Mauguin space group symbol: P -6 2 m
• Hall space group symbol: P -6 -2
• Residual factor for all reflections: 0.081
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No