Information card for entry 2238069

Structure parameters

• Chemical name: Magnesium hydroxide hydrogenarsenate (6.75/3/4)
• Formula: As4 H4.5 Mg6.75 O19
• Calculated formula: As4 Mg6.75 O19
• Title of publication: Mg~6.75~(OH)~3~(H~0.166~AsO~4~)~3~(HAsO~4~), a member of the <i>M</i>~1-~<i>~x~M</i>'~6~(OH)~3~(H~2<i>x~/3</i>AsO~4~)~3~(HAsO~4~) family (<i>M</i>,<i>M</i>' = Co; Ni)
• Authors of publication: Weil, Matthias
• Journal of publication: Acta Crystallographica Section E
• Year of publication: 2013
• Journal volume: 69
• Journal issue: 5
• Pages of publication: i29
• a: 12.7651 ± 0.0003 Å
• b: 12.7651 ± 0.0003 Å
• c: 5.0844 ± 0.0001 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 717.49 ± 0.03 ų
• Cell temperature: 296 ± 2 K
• Ambient diffraction temperature: 296 ± 2 K
• Number of distinct elements: 4
• Space group number: 186
• Hermann-Mauguin space group symbol: P 63 m c
• Hall space group symbol: P 6c -2c
• Residual factor for all reflections: 0.0329
• Residual factor for significantly intense reflections: 0.0291
• Weighted residual factors for significantly intense reflections: 0.0568
• Weighted residual factors for all reflections included in the refinement: 0.0575
• Goodness-of-fit parameter for all reflections included in the refinement: 1.205
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes