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Information card for entry 8100193
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| Coordinates | 8100193.cif |
|---|---|
| External links | ChemSpider; PubChem |
| Formula | C16 H16 O4 |
|---|---|
| Calculated formula | C16 H16 O4 |
| SMILES | c1(=O)c(c(C)oc2cc3c(C=CC(C)(C)O3)c(c12)O)C |
| Title of publication | Crystal structure of 5-hydroxy-2,3,8,8-tetramethyl-4H,8H-benzo[1,2- β:5,4-β']dipyran-4-one, C~16~H~16~O~4~ |
| Authors of publication | Golen, James A.; Williard, Paul G.; Ram, Siya; Sachdeva, Yesh P.; Wilson, Donna Kay; Zhar, Salah; Verma, Ravi K. |
| Journal of publication | Zeitschrift für Kristallographie - New Crystal Structures |
| Year of publication | 2004 |
| Journal volume | 219 |
| Journal issue | 4 |
| Pages of publication | 405 - 406 |
| a | 9.149 ± 0.002 Å |
| b | 13.029 ± 0.003 Å |
| c | 11.608 ± 0.002 Å |
| α | 90° |
| β | 99.9 ± 0.03° |
| γ | 90° |
| Cell volume | 1363.1 ± 0.5 Å3 |
| Cell temperature | 296 ± 2 K |
| Ambient diffraction temperature | 296 ± 2 K |
| Number of distinct elements | 3 |
| Space group number | 14 |
| Hermann-Mauguin space group symbol | P 1 21/c 1 |
| Hall space group symbol | -P 2ybc |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 301880 (current) | 2025-08-23 | Add cross-references to PubChem compounds in COD range 8/ Each referenced PubChem compound corresponds to the full crystal structure. |
8100193.cif |
| 202018 | 2017-10-14 | cif/ Marking COD entries in range 8 that are known to be related to ChemSpider entries using the _cod_related_entry data loop. |
8100193.cif |
| 176728 | 2016-02-18 | cif/ (antanas@echidna.ibt.lt) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in range 8. |
8100193.cif |
| 107867 | 2014-03-22 | cif/8/ (antanas@lokys.ibt.lt) Adding and updating bibliographic information: volume, authors, issue, first page, last page. |
8100193.cif |
| 35911 | 2012-02-28 | cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree. |
8100193.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. |
8100193.cif |
| 853 | 2009-11-16 | cif/ Reconstructing spacegroup designators from the symmetry operators were possible. The comands used can be found in the log file reformat-spacegroups-2009.11.14.log committed with the current revision. Only lines that contained spacegroup designators were changed, and all files pass vcif test after the conversion. |
8100193.cif |
| 19 | 2008-01-26 | Changing all end-of-line codes from DOS style to UNIX style in all COD CIF files, for more convenient processing: In the cod/cif/ directory: ff \*.cif | xargs perl -i -pe 's/\r\n/\n/' |
8100193.cif |
| 14 | 2008-01-14 | Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files. |
8100193.cif |
| 13 | 2008-01-13 | Setting the svn:keywords property to "Author Date Revision URL Id" for all CIF files in the cod/cif directory. |
8100193.cif |
| 1 | 2007-11-30 | Adding all .cif files from the COD, downloaded in a Cod.zip file on 2007.02.07 (and the same Cod.zip is downloadable today, on 2007.11.29) |
8100193.cif |
All data in the COD and the database itself are dedicated to the
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.
Users of the data should acknowledge the original authors of the
structural data.