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Information card for entry 2101440
Preview
| Coordinates | 2101440.cif |
|---|---|
| Original IUCr paper | HTML |
| Formula | C20 H14 Cl2 O4 |
|---|---|
| Calculated formula | C20 H14 Cl2 O4 |
| SMILES | Clc1cccc2c1[C@@H]1c3cccc(Cl)c3[C@H]2C(=C1C(=O)OC)C(=O)OC.Clc1cccc2c1[C@H]1c3cccc(Cl)c3[C@@H]2C(=C1C(=O)OC)C(=O)OC |
| Title of publication | Structures and photochemistry of 1,5-disubstituted dibenzobarrelenes |
| Authors of publication | Jones, R.; Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Yang, J. |
| Journal of publication | Acta Crystallographica Section B |
| Year of publication | 1996 |
| Journal volume | 52 |
| Journal issue | 1 |
| Pages of publication | 151 - 158 |
| a | 7.672 ± 0.001 Å |
| b | 8.217 ± 0.002 Å |
| c | 29.042 ± 0.002 Å |
| α | 90° |
| β | 92.41 ± 0.01° |
| γ | 90° |
| Cell volume | 1829.2 ± 0.5 Å3 |
| 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 |
| Diffraction radiation wavelength | 1.54184 Å |
| Diffraction radiation type | Cu |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 278324 (current) | 2022-10-03 | cod/ Added an explicit space group symmetry operation list based on the provided space group symbols and updated space group information using the 'cif_filter' program. |
2101440.cif |
| 176768 | 2016-02-20 | cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/10. |
2101440.cif |
| 91933 | 2013-12-28 | cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs. |
2101440.cif |
| 32112 | 2012-02-03 | cif/: committing an update of 45+ thous files, with information appended from the originals. | 2101440.cif |
| 26848 | 2011-09-28 | cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree. |
2101440.cif |
| 26029 | 2011-09-17 | cif/2/ Reverting changes of revision 25271: ( cd cif/2/; svn merge -r25271:25270 . ) The problem was that the reprocessed files from IUCr, although were more complete, "resurrected" data errors that were corrected in the previous recisions. The additional data that have been extracted during the reprocessing will have to be merged without overwriting the existing values in COD files, except some explicit and controlled cases (such as publication titles and chemical names). |
2101440.cif |
| 25271 | 2011-09-10 | cif/2/ Adding reporocessed IUCr CIFs for the years 1980-2010. The CIFs now contain more complete bibliography, substance names, correctly unfolded text fields (using the CIF line unfolding protocol), explicitely set cell angles, and _cod_data_source_block fields. |
2101440.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. |
2101440.cif |
| 340 | 2008-04-05 | Fixing CIF files headers in the CIF files from the Acta-Cryst-B/ retrospecive deposition. |
2101440.cif |
| 326 | 2008-04-03 | Adding all Acta Cryst. B, C, and E missing retrospective CIF files up to 2008 February, generated from the files that were automatically downloaded from the IUCr site. |
2101440.cif |
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Users of the data should acknowledge the original authors of the
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