Information card for entry 2021889

Structure parameters

• Formula: B2 O5 Sr2
• Calculated formula: B2 O5 Sr2
• Title of publication: Orientational order-disorder γ ↔ β ↔ α′ ↔ α phase transitions in Sr2B2O5 pyroborate and crystal structures of β and α phases
• Authors of publication: Volkov, Sergey; Dušek, Michal; Bubnova, Rimma; Krzhizhanovskaya, Maria; Ugolkov, Valery; Obozova, Ekaterina; Filatov, Stanislav
• Journal of publication: Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials
• Year of publication: 2017
• Journal volume: 73
• Journal issue: 6
• Pages of publication: 1056
• a: 7.763 ± 0.002 Å
• b: 5.3386 ± 0.001 Å
• c: 11.875 ± 0.002 Å
• α: 90°
• β: 92.64 ± 0.02°
• γ: 90°
• Cell volume: 491.62 ± 0.18 ų
• Cell temperature: 295 K
• Ambient diffraction temperature: 295 K
• Number of distinct elements: 3
• 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: 0.0403
• Residual factor for significantly intense reflections: 0.0314
• Weighted residual factors for significantly intense reflections: 0.033
• Weighted residual factors for all reflections included in the refinement: 0.0352
• Goodness-of-fit parameter for significantly intense reflections: 1.2
• Goodness-of-fit parameter for all reflections included in the refinement: 1.17
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 0.71069 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No