Information card for entry 2236302

Structure parameters

• Chemical name: Diammonium hydrogenarsenate(V)
• Formula: As H9 N2 O4
• Calculated formula: As H9 N2 O4
• SMILES: [NH4+].[NH4+].O[As](=O)([O-])[O-]
• Title of publication: Redetermination of (NH~4~)~2~HAsO~4~
• Authors of publication: Weil, Matthias
• Journal of publication: Acta Crystallographica Section E
• Year of publication: 2012
• Journal volume: 68
• Journal issue: 11
• Pages of publication: i82
• a: 11.3426 ± 0.0004 Å
• b: 6.8512 ± 0.0003 Å
• c: 8.113 ± 0.0003 Å
• α: 90°
• β: 113.784 ± 0.004°
• γ: 90°
• Cell volume: 576.92 ± 0.04 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Residual factor for all reflections: 0.0317
• Residual factor for significantly intense reflections: 0.0221
• Weighted residual factors for significantly intense reflections: 0.0512
• Weighted residual factors for all reflections included in the refinement: 0.0551
• Goodness-of-fit parameter for all reflections included in the refinement: 1.039
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes