Information card for entry 2014707

Structure parameters

• Common name: α-Disamarium tetraborate
• Chemical name: Disamarium tetraborate
• Formula: B4 O9 Sm2
• Calculated formula: B4 O9 Sm2
• Title of publication: High-pressure syntheses of α-RE~2~B~4~O~9~ (RE = Sm, Ho), with a structure type displaying edge-sharing BO~4~ tetrahedra
• Authors of publication: Emme, Holger; Huppertz, Hubert
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2005
• Journal volume: 61
• Journal issue: 3
• Pages of publication: i29 - i31
• a: 25.572 ± 0.005 Å
• b: 4.4516 ± 0.0009 Å
• c: 24.967 ± 0.005 Å
• α: 90°
• β: 99.85 ± 0.03°
• γ: 90°
• Cell volume: 2800.3 ± 1 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 3
• 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: 0.0186
• Residual factor for significantly intense reflections: 0.0135
• Weighted residual factors for significantly intense reflections: 0.0279
• Weighted residual factors for all reflections included in the refinement: 0.0287
• Goodness-of-fit parameter for all reflections included in the refinement: 0.952
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes