Crystallography Open Database
- COD Home
- Accessing COD Data
- Add Your Data
- Documentation
Information card for entry 4024239
Preview
| Coordinates | 4024239.cif |
|---|---|
| Original paper (by DOI) | HTML |
| External links | ChemSpider |
| Formula | C22 H20 S7 Si2 |
|---|---|
| Calculated formula | C22 H20 S7 Si2 |
| SMILES | s1c([Si](C)(C)C)cc2c1sc1sc3sc4sc5sc6sc([Si](C)(C)C)cc6c5c4c3c21 |
| Title of publication | Syntheses and Crystal Structures of Fused Thiophenes: [7]Helicene and Double Helicene, a D2-Symmetric Dimer of 3,3'-Bis(dithieno[2,3-b:3',2'-d]thiophene) |
| Authors of publication | Chunli Li; Jianwu Shi; Li Xu; Yangguang Wang; Yanxiang Cheng; Hua Wang |
| Journal of publication | Journal of Organic Chemistry |
| Year of publication | 2009 |
| Journal volume | 74 |
| Pages of publication | 408 - 411 |
| a | 7.964 ± 0.004 Å |
| b | 11.56 ± 0.005 Å |
| c | 16.232 ± 0.007 Å |
| α | 73.108 ± 0.008° |
| β | 81.205 ± 0.009° |
| γ | 72.258 ± 0.008° |
| Cell volume | 1358.5 ± 1.1 Å3 |
| Cell temperature | 296 ± 2 K |
| Ambient diffraction temperature | 296 ± 2 K |
| Number of distinct elements | 4 |
| Space group number | 2 |
| Hermann-Mauguin space group symbol | P -1 |
| Hall space group symbol | -P 1 |
| Residual factor for all reflections | 0.0949 |
| Residual factor for significantly intense reflections | 0.0485 |
| Weighted residual factors for significantly intense reflections | 0.0988 |
| Weighted residual factors for all reflections included in the refinement | 0.1175 |
| Goodness-of-fit parameter for all reflections included in the refinement | 1.01 |
| Diffraction radiation wavelength | 0.71073 Å |
| Diffraction radiation type | MoKα |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 201982 (current) | 2017-10-13 | cif/ Marking COD entries in range 4 that are known to be related to ChemSpider entries using the _cod_related_entry data loop. |
4024239.cif |
| 178421 | 2016-03-21 | cif/4/02/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 4/02/42. |
4024239.cif |
| 120074 | 2014-07-11 | Adding DOIs to range 4/02 structures. | 4024239.cif |
| 34330 | 2012-02-24 | cif/4/ Reorganising CIF range 4 into a prefix tree. |
4024239.cif |
| 5312 | 2011-01-03 | cif/ Adding files, updated with the 'cif_fix_enum' program and the cif_core.dic dictionary. The enumerator values were fixed, mostly incorrect case, but also some values that had extra underscores, dashes or spaces. Unfortunately, 22 had non-ASCII characters with the 8-th bit set, and these got incorrectly interpreted as latin1 characters and converted to their UTF8 equivalents by Perl. To fix the structures, however, they need to be redeposited from the original files with the new CIFParser/cif_filter version. |
4024239.cif |
| 966 | 2010-01-30 | cif/ Adding _cod_database_code tags to all COD entries. Adding tag description to the cif_cod.dic dictionary so that COD entries can be validated. |
4024239.cif |
| 948 | 2010-01-19 | cif/ Adding CIFs for the Acta-Cryst-B-2009_06/ Acta-Cryst-C-2009_12/ Acta-Cryst-E-2009_12/ J-Appl-Cryst-2009_06/ J-Org-Chem-2009/ deposition. |
4024239.cif |
All data in the COD and the database itself are dedicated to the
public domain and licensed under the
CC0
License
.
Users of the data should acknowledge the original authors of the
structural data.