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Information card for entry 2016891
Preview
| Coordinates | 2016891.cif |
|---|---|
| Original IUCr paper | HTML |
| Formula | Ba0.84 Nb8 O34 P5 Rb3 |
|---|---|
| Calculated formula | Ba Nb8 O34 P5 Rb3 |
| Title of publication | Structure of Ba~0.84~Rb~3~Nb~8~P~5~O~34~ |
| Authors of publication | Gueho, C.; Borel, M. M.; Grandin, A.; Leclaire, A.; Raveau, B. |
| Journal of publication | Acta Crystallographica Section C |
| Year of publication | 1992 |
| Journal volume | 48 |
| Journal issue | 11 |
| Pages of publication | 2066 - 2067 |
| a | 10.6604 ± 0.0008 Å |
| b | 10.6604 ± 0.0008 Å |
| c | 6.4434 ± 0.0004 Å |
| α | 90° |
| β | 90° |
| γ | 90° |
| Cell volume | 732.2 ± 0.1 Å3 |
| Cell temperature | 294 K |
| Number of distinct elements | 5 |
| Hermann-Mauguin space group symbol | P -4 m 2 |
| Hall space group symbol | P -4 -2 |
| Residual factor for significantly intense reflections | 0.039 |
| Weighted residual factors for significantly intense reflections | 0.046 |
| Goodness-of-fit parameter for significantly intense reflections | 1.009 |
| Diffraction radiation wavelength | 0.71073 Å |
| Diffraction radiation type | MoKα |
| Duplicate of | 1001535 |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 287519 (current) | 2023-11-10 | cod/ (saulius@tasmanijos-velnias) Marking up COD duplicates based on automatic matching in: Path: outputs/cod-new-duplicates-expanded.tsv Name: cod-new-duplicates-expanded.tsv Working Copy Root Path: /home/saulius/struct/COD-crude-data URL: svn+ssh://www.crystallography.net/home/coder/svn-repositories/COD-crude-data/archives/2021/COD/outputs/cod-new-duplicates-expanded.tsv Relative URL: ^/archives/2021/COD/outputs/cod-new-duplicates-expanded.tsv Repository Root: svn+ssh://www.crystallography.net/home/coder/svn-repositories/COD-crude-data Repository UUID: f03e6fd5-de02-4a89-aa47-d94ad8425ebd Revision: 7431 Node Kind: file Schedule: normal Last Changed Author: saulius Last Changed Rev: 7431 Last Changed Date: 2023-11-10 16:55:42 +0200 (Fri, 10 Nov 2023) Text Last Updated: 2023-11-10 16:31:20 +0200 (Fri, 10 Nov 2023) Checksum: 0c965281867bf38581b3e32df20963a23950bd46 |
2016891.cif |
| 176435 | 2016-02-14 | cif/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries from ranges 1, 2. |
2016891.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. |
2016891.cif |
| 91933 | 2013-12-28 | cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs. |
2016891.cif |
| 26848 | 2011-09-28 | cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree. |
2016891.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. |
2016891.cif |
| 858 | 2009-11-18 | cod/cif/ Changing all _chemical_formula_sum values, were necessary, to conform IUCr recommended syntax and sorting order. After this operation, it will be easier to search for structures using the _chemical_formula_sum values. Only those files and thos lines that really needed to be changed were changed; otehrwise the CIFs were not reformatted. The procedure was as follows: first, all files were passed through a 'cif_filter --parse-formula-sum' command, and the lines containing _cif_formula_sum matching tags were extracted. The extracted tags were "spliced" into the CIF files using the ./bin/{un,}grepciftag commands and awk to filter out old tags and add new tags in their place; the replacement was only done if the new tags contained "_cod_" tags ('grep -q _cod_ tmp-$$'), indicating that cif_filter has altered the formula, or the original file did not contain the _chemical_formula_sum tag ('! grep -q _chemical_formula_sum X'), indicating that cif_filter has guessed the chemical_formula_sum from the file (which should not have happened, actually). If the file was different, disregarding spaces, from the original one ('if ! diff -wb X tmp2-$$'), the original was replaced by the new file, to be committed to the repository. The full command for this step was: ( \ set -x; \ find ? -name \*.cif \ | xargs -n1 -iX \ sh -c 'cif_filter --parse-formula-sum X \ | ./bin/grepciftag _chemical_formula_sum > tmp-$$; \ if grep -q _cod_ tmp-$$ || ! grep -q _chemical_formula_sum X; \ then \ awk "/^#/,/_chemical_formula_sum/{print} /_chemical_formula_sum/{exit}" X \ | ./bin/ungrepciftag _chemical_formula_sum > tmp2-$$; \ cat tmp-$$ >> tmp2-$$; \ awk "/_chemical_formula_sum/,/\$eof/" X \ | ./bin/ungrepciftag _chemical_formula_sum >> tmp2-$$; \ if ! diff -wb X tmp2-$$; \ then \ mv -fv tmp2-$$ X; \ fi; \ fi; \ rm -f tmp-$$ tmp2-$$' \ ) >& sort-chemical-formulae-2009.11.16.log Next, the files were searched that differ from their originals only by the order of CIF tags: svn st \ | awk '/^M/{print $NF}' \ | sort | xargs -n1 -iX \ bash -c 'if diff -q <(svn cat X|sort) <(sort X) >& /dev/null; \ then echo X; \ fi' \ >& only-reordered.lst These files, after manual inspection ('cat only-reordered.lst | xargs svn diff | less'), were reverted to the originals: cat only-reordered.lst | xargs svn revert Finally, a syntax check was performed using 'vcif': svn st | awk '/^M/{print $NF}' \ | sort | xargs -n1 -iX \ sh -c 'echo -n X"\r"; vcif -l 2048 X || { echo == X == ; echo X >&2; }' \ 2> vcif-check-2009.11.18.err A check on the whole COD archive showed the same files as recorded in vcif-check-2009.11.18.err: find ? -name \*.cif \ | sort \ | xargs -n1 -iX \ sh -c 'echo -n X"\r"; \ vcif -l 2048 X || { echo == X == ; echo X >&2; }' \ 2> vcif-all-check-`-date`.err diff vcif-check-2009.11.18.err vcif-all-check-2009.11.18.err Since no differences were detected in between vcif-check-2009.11.18.err and vcif-all-check-2009.11.18.err, the latter was deleted and is not committed. The check reveled two broken files, 2/2000267.cif and 2/2001000.cif; these were corrected manually. Afther this, one more 'vcif' check showed no syntax errors, and the changes are committed into the COD repository. 19798 files have modifications in this commit, according to svn st | grep '^M' | wc -l |
2016891.cif |
| 667 | 2009-04-21 | Adding new files from the Acta-Cryst-C-1991-1993/ range (data obtained from the files downloaded from the IUCr web site); these files were not yet present in COD, according to the current find-numbers.pl procedure. |
2016891.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.