Information card for entry 7251920

Structure parameters

• Formula: C20 H17 N O4
• Calculated formula: C20 H17 N O4
• Title of publication: A sustainable one-pot multi-component approach toward the synthesis of symmetric and unsymmetrical spiro heterocycles catalyzed by the Brønsted acidic ionic liquid [CMMIM][BF4]
• Authors of publication: Begum, Rujuma; Maiti, Barnali
• Journal of publication: RSC Advances
• Year of publication: 2026
• Journal volume: 16
• Journal issue: 24
• Pages of publication: 21953 - 21966
• a: 8.6939 ± 0.0015 Å
• b: 20.983 ± 0.004 Å
• c: 9.7236 ± 0.0017 Å
• α: 90°
• β: 116.045 ± 0.005°
• γ: 90°
• Cell volume: 1593.7 ± 0.5 ų
• Cell temperature: 300 ± 2 K
• Ambient diffraction temperature: 300 ± 2 K
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/n 1
• Hall space group symbol: -P 2yn
• Residual factor for all reflections: 0.0768
• Residual factor for significantly intense reflections: 0.0482
• Weighted residual factors for significantly intense reflections: 0.1021
• Weighted residual factors for all reflections included in the refinement: 0.1217
• Goodness-of-fit parameter for all reflections included in the refinement: 1.066
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No