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Information card for entry 2021934
Preview
| Coordinates | 2021934.cif |
|---|---|
| Structure factors | 2021934.hkl |
| Original IUCr paper | HTML |
| External links | PubChem |
| Chemical name | (3a<i>R</i>,4<i>S</i>,7<i>R</i>,7a<i>S</i>)-2-(4-Nitrophenyl)-3a,4,7,7a-tetrahydro-4,7-epoxy-1<i>H</i>-isoindole-1,3(2<i>H</i>)-dione |
|---|---|
| Formula | C14 H10 N2 O5 |
| Calculated formula | C14 H10 N2 O5 |
| SMILES | [C@@H]12[C@H]3[C@@H]([C@@H](C=C1)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 | 5.285 ± 0.003 Å |
| b | 18.418 ± 0.009 Å |
| c | 6.699 ± 0.003 Å |
| α | 90° |
| β | 100.105 ± 0.007° |
| γ | 90° |
| Cell volume | 642 ± 0.6 Å3 |
| Cell temperature | 298 ± 2 K |
| Ambient diffraction temperature | 298 ± 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 | 0.0868 |
| Residual factor for significantly intense reflections | 0.0666 |
| Weighted residual factors for significantly intense reflections | 0.1572 |
| Weighted residual factors for all reflections included in the refinement | 0.1682 |
| Goodness-of-fit parameter for all reflections included in the refinement | 0.965 |
| Diffraction radiation wavelength | 0.71073 Å |
| Diffraction radiation type | MoKα |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | Yes |
| Revision | Date | Message | Files |
|---|---|---|---|
| 301801 (current) | 2025-08-19 | Add cross-references to PubChem compounds in COD range 2/02 Each referenced PubChem compound corresponds to the full crystal structure. |
2021934.cif 2021934.hkl |
| 246407 | 2020-01-01 | cif/ hkl/ Adding structures of 2021933, 2021934, 2021935, 2021936 via cif-deposit CGI script. |
2021934.cif 2021934.hkl |
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Users of the data should acknowledge the original authors of the
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