Information card for entry 4323619

Structure parameters

• Chemical name: dodeca-Chromium(II)-potassiumbromidetetradisilicate
• Formula: Br2 Cr24 K2 O56 Si16
• Calculated formula: Br2 Cr24 K2 O56 Si16
• Title of publication: Cr~3~Si~2~O~7~.1/4MX (MX = NaCl, NaBr, KCl, KBr): A Cage Structure Built from [Cr^II^O~4~] and [Si~2~O~7~] Units 1
• Authors of publication: Anita Schmidt; Robert Glaum
• Journal of publication: Inorganic Chemistry
• Year of publication: 1997
• Journal volume: 36
• Pages of publication: 4883 - 4887
• a: 10.391 ± 0.001 Å
• b: 10.391 ± 0.001 Å
• c: 12.967 ± 0.004 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1400.1 ± 0.5 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 5
• Space group number: 139
• Hermann-Mauguin space group symbol: I 4/m m m
• Hall space group symbol: -I 4 2
• Residual factor for all reflections: 0.0679
• Residual factor for significantly intense reflections: 0.0596
• Weighted residual factors for all reflections: 0.0871
• Weighted residual factors for significantly intense reflections: 0.0854
• Goodness-of-fit parameter for all reflections: 1.462
• Goodness-of-fit parameter for significantly intense reflections: 1.51
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No