Information card for entry 4303862

Structure parameters

• Formula: Ca4 K2 O21 Si8
• Calculated formula: Ca4 K2 O21 Si8
• Title of publication: Synthesis, Crystal Structure, and Vibrational Spectroscopy of K2Ca4Si8O21 - An Unusual Single-Layer Silicate Containing Q2 and Q3 Units
• Authors of publication: Erik Arroyabe; Reinhard Kaindl; Daniel M. Többens; Volker Kahlenberg
• Journal of publication: Inorganic Chemistry
• Year of publication: 2009
• Journal volume: 48
• Pages of publication: 11929 - 11934
• a: 6.8052 ± 0.0003 Å
• b: 7.1049 ± 0.0003 Å
• c: 11.2132 ± 0.0005 Å
• α: 96.68 ± 0.004°
• β: 105.28 ± 0.004°
• γ: 109.259 ± 0.004°
• Cell volume: 481.27 ± 0.04 ų
• Cell temperature: 298 ± 2 K
• Ambient diffraction temperature: 298 ± 2 K
• Number of distinct elements: 4
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Residual factor for all reflections: 0.0385
• Residual factor for significantly intense reflections: 0.0279
• Weighted residual factors for significantly intense reflections: 0.0651
• Weighted residual factors for all reflections included in the refinement: 0.0682
• Goodness-of-fit parameter for all reflections included in the refinement: 1.052
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No