Information card for entry 1001074

Structure parameters

• Chemical name: Potassium tantalum cyclo-trigermanate
• Formula: Ge3 K O9 Ta
• Calculated formula: Ge3 K O9 Ta
• Title of publication: Sur de nouveaux germanates et silicates de type benitoite
• Authors of publication: Choisnet, J; Deschanvres, A; Raveau, B
• Journal of publication: Journal of Solid State Chemistry
• Year of publication: 1972
• Journal volume: 4
• Pages of publication: 209 - 218
• a: 6.972 ± 0.005 Å
• b: 6.972 ± 0.005 Å
• c: 10.144 ± 0.005 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 427 ų
• Number of distinct elements: 4
• Space group number: 188
• Hermann-Mauguin space group symbol: P -6 c 2
• Hall space group symbol: P -6c 2
• Residual factor for all reflections: 0.08
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No