Information card for entry 2242241

Structure parameters

• Chemical name: Potassium chromium aluminium diarsenate, KCr~1/4~Al~3/4~As~2~O~7~
• Formula: Al0.75 As2 Cr0.25 K O7
• Calculated formula: Al0.745 As2 Cr0.255 K O7
• Title of publication: New mixed aluminium‒chromium diarsenate
• Authors of publication: Bouhassine, Mohamad Alem; Boughzala, Habib
• Journal of publication: Acta Crystallographica Section E
• Year of publication: 2017
• Journal volume: 73
• Journal issue: 3
• Pages of publication: 345 - 348
• a: 6.243 ± 0.003 Å
• b: 6.349 ± 0.003 Å
• c: 8.153 ± 0.004 Å
• α: 96.57 ± 0.02°
• β: 104.45 ± 0.03°
• γ: 103.08 ± 0.04°
• Cell volume: 299.8 ± 0.3 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 5
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Residual factor for all reflections: 0.0286
• Residual factor for significantly intense reflections: 0.023
• Weighted residual factors for significantly intense reflections: 0.0566
• Weighted residual factors for all reflections included in the refinement: 0.0586
• Goodness-of-fit parameter for all reflections included in the refinement: 1.081
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes