Information card for entry 8101422

Structure parameters

• Formula: As4 Ca Na2 O12
• Calculated formula: As4 Ca Na2 O12
• SMILES: [As]1(=O)([O-])O[As]([O-])(=O)O[As](=O)([O-])O[As](=O)(O1)[O-].[Na+].[Ca+2].[Na+]
• Title of publication: Crystal structure of sodium calcium cyclo-tetraarsenate(V), CaNa~2~As~4~O~12~
• Authors of publication: Graia, Mohsen; Driss, Ahmed; Jouini, Tahar
• Journal of publication: Zeitschrift für Kristallographie - New Crystal Structures
• Year of publication: 1999
• Journal volume: 214
• Journal issue: 1
• Pages of publication: 1 - 2
• a: 9.936 ± 0.002 Å
• b: 9.936 ± 0.002 Å
• c: 5.1632 ± 0.0006 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 509.7 ± 0.2 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 4
• Space group number: 125
• Hermann-Mauguin space group symbol: P 4/n b m :2
• Hall space group symbol: -P 4a 2b
• Residual factor for significantly intense reflections: 0.0257
• Weighted residual factors for significantly intense reflections: 0.0496
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No