Information card for entry 2105551

Structure parameters

• Chemical name: β-sodium potassium aluminum germanate
• Formula: Al0.97 Ge1.03 K0.19 Na0.78 O4
• Calculated formula: Al0.98 Ge1.02 K0.18 Na0.78 O3.9975
• Title of publication: Monoclinic and Hexagonal Nepheline Structures of (Na~3/4~/K~1/4~)AlGeO~4~
• Authors of publication: Hammond, R. P.; Barbier, J.
• Journal of publication: Acta Crystallographica Section B
• Year of publication: 1998
• Journal volume: 54
• Journal issue: 3
• Pages of publication: 211 - 220
• a: 10.164 ± 0.001 Å
• b: 10.164 ± 0.001 Å
• c: 8.54 ± 0.002 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 764 ± 0.2 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 5
• Space group number: 173
• Hermann-Mauguin space group symbol: P 63
• Hall space group symbol: P 6c
• Residual factor for all reflections: 0.1176
• Residual factor for significantly intense reflections: 0.0411
• Weighted residual factors for all reflections: 0.0665
• Weighted residual factors for significantly intense reflections: 0.056
• Goodness-of-fit parameter for all reflections: 0.709
• Goodness-of-fit parameter for significantly intense reflections: 0.903
• Diffraction radiation wavelength: 0.56086 Å
• Diffraction radiation type: AgKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No