Information card for entry 2001899

Structure parameters

• Formula: Ca K7 Nb14 O47 Si4
• Calculated formula: Ca3 K6 Nb14 O47 Si4
• Title of publication: Structure of a new siliconiobate K~6.5~Ca~0.75~Nb~14~Si~4~O~47~
• Authors of publication: Borel, M. M.; Chardon, J.; Grandin, A.; Leclaire, A.; Raveau, B.
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 1993
• Journal volume: 49
• Journal issue: 3
• Pages of publication: 570 - 571
• a: 9.046 ± 0.001 Å
• b: 9.046 ± 0.001 Å
• c: 27.883 ± 0.001 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1976 ± 0.3 ų
• Cell temperature: 294 K
• Number of distinct elements: 5
• Hermann-Mauguin space group symbol: P 63/m c m
• Hall space group symbol: -P 6c 2
• Residual factor for significantly intense reflections: 0.028
• Weighted residual factors for significantly intense reflections: 0.027
• Goodness-of-fit parameter for significantly intense reflections: 1.004
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No