Information card for entry 7135694

Structure parameters

• Formula: C20 H14 B Br3 N2
• Calculated formula: C20 H14 B Br3 N2
• Title of publication: Bis-BN-embedded [4]helicenes: synthesis, structures and properties.
• Authors of publication: Liu, Bingkang; Cui, Jiahao; Wu, Xiaoming; Zhou, Jing; Zhang, Lei; Li, Chenglong; Liu, Xuguang
• Journal of publication: Chemical communications (Cambridge, England)
• Year of publication: 2026
• Journal volume: 62
• Journal issue: 33
• Pages of publication: 8481 - 8485
• a: 10.523 ± 0.0008 Å
• b: 13.4295 ± 0.0011 Å
• c: 26.9791 ± 0.0017 Å
• α: 90°
• β: 91.28 ± 0.006°
• γ: 90°
• Cell volume: 3811.7 ± 0.5 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 5
• Space group number: 15
• Hermann-Mauguin space group symbol: I 1 2/a 1
• Hall space group symbol: -I 2ya
• Residual factor for all reflections: 0.0713
• Residual factor for significantly intense reflections: 0.0406
• Weighted residual factors for significantly intense reflections: 0.0874
• Weighted residual factors for all reflections included in the refinement: 0.1006
• Goodness-of-fit parameter for all reflections included in the refinement: 1.016
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No