Information card for entry 2207204

Structure parameters

• Chemical name: sodium calcium niobate oxide arsenate
• Formula: As2 Ca1.5 Na Nb2 O12
• Calculated formula: As2 Ca1.5 Na Nb2 O12
• Title of publication: NaCa~1.5~(NbO)~2~O~2~(AsO~4~)~2~
• Authors of publication: Ben Amor, Rym; Zid, Mohamed Faouzi
• Journal of publication: Acta Crystallographica, Section E
• Year of publication: 2005
• Journal volume: 61
• Journal issue: 11
• Pages of publication: i228 - i230
• a: 6.73 ± 0.002 Å
• b: 22.302 ± 0.003 Å
• c: 7.4309 ± 0.0009 Å
• α: 90°
• β: 113.827 ± 0.001°
• γ: 90°
• Cell volume: 1020.3 ± 0.4 ų
• Cell temperature: 298 ± 2 K
• Ambient diffraction temperature: 298 ± 2 K
• Number of distinct elements: 5
• Space group number: 15
• Hermann-Mauguin space group symbol: C 1 2/c 1
• Hall space group symbol: -C 2yc
• Residual factor for all reflections: 0.0245
• Residual factor for significantly intense reflections: 0.0194
• Weighted residual factors for significantly intense reflections: 0.05
• Weighted residual factors for all reflections included in the refinement: 0.0514
• Goodness-of-fit parameter for all reflections included in the refinement: 1.101
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No