Information card for entry 2019661

Structure parameters

• Chemical name: Heptapraseodymium henicosazinc disilicon
• Formula: Pr7 Si1.91 Zn21.09
• Calculated formula: Pr7 Si1.914 Zn21.086
• Title of publication: Synthesis and crystal structures of <i>RE</i>~7~Zn~21+<i>x~</i>Si~2{‒~<i>x</i>} [<i>RE</i> = Ce, Pr, and Nd; 0.09(1) < <i>x</i> < 0.95(1)]
• Authors of publication: Hoos, James; Suen, Nian-Tzu; Bobev, Svilen
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2014
• Journal volume: 70
• Journal issue: 10
• Pages of publication: 945 - 948
• a: 15.361 ± 0.002 Å
• b: 16.984 ± 0.002 Å
• c: 4.4555 ± 0.0006 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1162.4 ± 0.3 ų
• Cell temperature: 200 ± 2 K
• Ambient diffraction temperature: 200 ± 2 K
• Number of distinct elements: 3
• Space group number: 55
• Hermann-Mauguin space group symbol: P b a m
• Hall space group symbol: -P 2 2ab
• Residual factor for all reflections: 0.0446
• Residual factor for significantly intense reflections: 0.0275
• Weighted residual factors for significantly intense reflections: 0.0446
• Weighted residual factors for all reflections included in the refinement: 0.0495
• Goodness-of-fit parameter for all reflections included in the refinement: 1.078
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes