Information card for entry 2014290

Structure parameters

• Common name: magnesium hydrogen arsenate
• Chemical name: heptamagnesium bis(arsenate) tetrakis(hydrogenarsenate)
• Formula: As6 H4 Mg7 O24
• Calculated formula: As6 H4 Mg7 O24
• Title of publication: Mg~7~(AsO~4~)~2~(HAsO~4~)~4~: a new magnesium arsenate with a very strong hydrogen bond
• Authors of publication: Kolitsch, Uwe; Bartu, Petr
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2004
• Journal volume: 60
• Journal issue: 9
• Pages of publication: i94 - i96
• a: 6.644 ± 0.001 Å
• b: 8.042 ± 0.002 Å
• c: 9.75 ± 0.002 Å
• α: 104.7 ± 0.03°
• β: 107.89 ± 0.03°
• γ: 101.16 ± 0.03°
• Cell volume: 458.2 ± 0.2 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 4
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Residual factor for all reflections: 0.0297
• Residual factor for significantly intense reflections: 0.0252
• Weighted residual factors for significantly intense reflections: 0.0598
• Weighted residual factors for all reflections included in the refinement: 0.0614
• Goodness-of-fit parameter for all reflections included in the refinement: 1.093
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes