Information card for entry 2021935

Structure parameters

• Common name: norcantharidine - 4-nitraaniline
• Chemical name: (3a<i>R</i>,4<i>S</i>,7<i>R</i>,7a<i>S</i>)-2-(4-nitrophenyl)-3a,4,5,6,7,7a-hexahydro-1<i>H</i>-4,7-epoxyisoindole-1,3(2<i>H</i>)-dione
• Formula: C14 H12 N2 O5
• Calculated formula: C14 H12 N2 O5
• SMILES: [C@H]12[C@@H]3[C@H]([C@H](CC1)O2)C(=O)N(C3=O)c1ccc(cc1)N(=O)=O
• Title of publication: Structural and theoretical study of four novel norcantharidine derivatives: two new cases of conditional isomorphism
• Authors of publication: Tan, Xue-Jie; Liu, Shuai; Hei, Xiao-Ming; Yang, Feng-Cun; He, Peng-Bing; Guo, Feng; Xing, Dian-Xiang
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2020
• Journal volume: 76
• Journal issue: 1
• Pages of publication: 75 - 86
• a: 5.3661 ± 0.0004 Å
• b: 18.6171 ± 0.0016 Å
• c: 6.6116 ± 0.0005 Å
• α: 90°
• β: 98.918 ± 0.007°
• γ: 90°
• Cell volume: 652.52 ± 0.09 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 4
• Space group number: 4
• Hermann-Mauguin space group symbol: P 1 21 1
• Hall space group symbol: P 2yb
• Residual factor for all reflections: 0.0447
• Residual factor for significantly intense reflections: 0.0403
• Weighted residual factors for significantly intense reflections: 0.1022
• Weighted residual factors for all reflections included in the refinement: 0.1091
• Goodness-of-fit parameter for all reflections included in the refinement: 1.059
• Diffraction radiation wavelength: 1.54184 Å
• Diffraction radiation type: CuKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes