Crystallography Open Database
- COD Home
- Accessing COD Data
- Add Your Data
- Documentation
Information card for entry 2103683
Preview
| Coordinates | 2103683.cif |
|---|---|
| Original IUCr paper | HTML |
| Formula | Ca2 Co O7 Si2 |
|---|---|
| Calculated formula | Ca2 Co O7 Si2 |
| Title of publication | Commensurate structure of Ca~2~CoSi~2~O~7~, a new twinned orthorhombic structure |
| Authors of publication | Hagiya, Kenji; Kusaka, Katsuhiro; Ohmasa, Masaaki; Iishi, Kazuaki |
| Journal of publication | Acta Crystallographica Section B |
| Year of publication | 2001 |
| Journal volume | 57 |
| Journal issue | 3 |
| Pages of publication | 271 - 277 |
| a | 23.51 ± 0.004 Å |
| b | 23.51 ± 0.004 Å |
| c | 5.025 ± 0.001 Å |
| α | 90° |
| β | 90° |
| γ | 90° |
| Cell volume | 2777.4 ± 0.9 Å3 |
| Cell temperature | 170 ± 0.5 K |
| Number of distinct elements | 4 |
| Space group number | 18 |
| Hermann-Mauguin space group symbol | P 21 21 2 |
| Hall space group symbol | P 2 2ab |
| Residual factor for all reflections | 0.084 |
| Residual factor for significantly intense reflections | 0.084 |
| Weighted residual factors for all reflections | 0.139 |
| Weighted residual factors for all reflections included in the refinement | 0.139 |
| Goodness-of-fit parameter for all reflections included in the refinement | 1.21 |
| Diffraction radiation wavelength | 0.71073 Å |
| Diffraction radiation type | MoKα |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 176768 (current) | 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. |
2103683.cif |
| 134621 | 2015-04-02 | The 'cif_fix_values' script with an option '--fix-only-weighting-scheme' and 'cif_filter' script were run over CIF files which included an incorrect value of the data item '_refine_ls_weighting_scheme'. Read the log for more details. There were more than 18k CIF files with values to modify. Usually these incorrect values include comment with formulas, but values of this data item must be an enumerator. The script creates new data item '_refine_ls_weighting_details' to store these comments with formulas, and writes the enumerator 'calc' as a value of data item '_refine_ls_weighting_scheme'. There exists some exceptions in the script. |
2103683.cif |
| 91933 | 2013-12-28 | cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs. |
2103683.cif |
| 32112 | 2012-02-03 | cif/: committing an update of 45+ thous files, with information appended from the originals. | 2103683.cif |
| 26848 | 2011-09-28 | cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree. |
2103683.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). |
2103683.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. |
2103683.cif |
| 17004 | 2011-03-31 | cif/ Commiting CIFs, that were updated with the 'cif_fix_values' script, using options '--fix-misspelled replacement_values.lst', '--fix-temperature' and '--fix-enums' with built-in table of enum values. The following cmd was used: > (set -x; find ? -name \*.cif | sort | xargs -i sh -c 'if !( > cif_fix_values --fix-misspelled ~/../inputs/replacament_values.lst {} | > cif_filter --add-cif-header {} | > sponge {} ) 2>&1 | grep NOTE; then svn revert {}; > fi' ) & |
2103683.cif |
| 5310 | 2011-01-02 | cif/ Running cif_fix_enum with the core CIF dictionary on COD ranges 2, 8 and 9. Range 9 remained unchanged, and in ranges 2 and 8 there were 17309 modified files, most changes were fixes enumerator case. |
2103683.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. |
2103683.cif |
| 397 | 2008-06-20 | Adding new CIF files deposited from Acta-Cryst-B-2001-2003/. |
2103683.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.