Crystallography Open Database

Information card for entry 9005855

Preview

Coordinates	9005855.cif
Original paper (by DOI)	HTML
External links	AMCSD; ChemSpider

Structure parameters

Mineral name	Stishovite
Formula	O2 Si
Calculated formula	O2 Si
SMILES	[Si+4].[O-2].[O-2]
Title of publication	Exploration of structure and bonding in stishovite with Fourier and Pseudoaton Refinement methods using single crystal and powder X-ray diffraction data Sample: ION+
Authors of publication	Spackman, M. A.; Hill, R. J.; Gibbs, G. V.
Journal of publication	Physics and Chemistry of Minerals
Year of publication	1987
Journal volume	14
Pages of publication	139 - 150
a	4.1773 Å
b	4.1773 Å
c	2.6655 Å
α	90°
β	90°
γ	90°
Cell volume	46.513 Å³
Number of distinct elements	2
Space group number	136
Hermann-Mauguin space group symbol	P 42/m n m
Hall space group symbol	-P 4n 2n
Duplicate of	9005854
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
291351 (current)	2024-04-25	Inserting Z values for entries in the 9 range, mostly missing	9005855.cif
287519	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	9005855.cif
202019	2017-10-14	cif/ Marking COD entries in range 9 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	9005855.cif
201816	2017-10-06	cod/ Enhancement: marking COD entries that are known to be related to the AMCSD entries using the _cod_related_entry data loop.	9005855.cif
176465	2016-02-16	cif/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in range 9.	9005855.cif
120115	2014-07-12	Adding DOIs to range 9 structures.	9005855.cif
86002	2013-05-09	cif/ (saulius@koala.ibt.lt) Adding the new AMCSD database code assignment ot the 'ref-matching' CIFs.	9005855.cif
85285	2013-05-05	cod/ (saulius@koala.ibt.lt) Removing outdated _amcsd_database_code data items from all series 9 CIFs.	9005855.cif
35913	2012-02-28	cif/9/ Reorganising range 9 into a prefix-directory tree. Range 9 is the last range to be reorganised.	9005855.cif
1210	2010-06-10	cif/9/ Updating 13213 AMCSD CIFs, taking new data from the AMCSD database and adding the assigned AMCSD numbers.	9005855.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.	9005855.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	9005855.cif
255	2008-03-10	Redepositing all AMCSD (9series) COD CIF files. This redeposition regenerates AMCSD (9 series) files, 10011 entries total, from the original source CIF file cifdata.cif found on the CD received from Armel. Most importantly, the truncated formulas seem to be corrected. The files are not folded, i.e. they have lines longer than 80 characters (conforming CIF 1.1 specification, but not CIF 1.0 specification), and are otherwise syntactically correct. Some missing coordinates were fixed manually, restoring them from the AMCSD site, and non-ASCII symbols were fixed automatically during filtering. After the redeposition, the cifs-with-errors.lst was regenerated using the following command: find -name \*.cif \ \| xargs -n1 -iI sh -c 'vcif -l 2048 I \|\| echo I' \ \| grep -vE 'CIF\|ERR' \ \| sort > cifs-with-errors.lst &	9005855.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/'	9005855.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	9005855.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.	9005855.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)	9005855.cif