Crystallography Open Database

Information card for entry 1101167

Preview

Coordinates	1101167.cif
Original paper (by DOI)	HTML

Structure parameters

Formula	Ca3 Mn2 O7
Calculated formula	Ca3 Mn2 O7
Title of publication	Ca~3~Mn~2~O~7~
Authors of publication	Guiblin, Nicolas; Grebille, Dominique; Leligny, Henri; Martin, Christine
Journal of publication	Acta Crystallographica, Section C: Crystal Structure Communications
Year of publication	2002
Journal volume	58
Journal issue	1
Pages of publication	i3 - i5
a	5.2347 Å
b	5.2421 Å
c	19.4177 Å
α	90°
β	90°
γ	90°
Cell volume	532.838 Å³
Cell temperature	298 K
Number of distinct elements	3
Space group number	36
Hermann-Mauguin space group symbol	A 21 a m
Hall space group symbol	A -2 2a
Duplicate of	2012432
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
210900 (current)	2018-09-12	cif/ Updating bibliography in entries 1101167, 2012432.	1101167.cif
190348	2017-01-10	cif/1/10/11/ (antanas@echidna.ibt.lt) Marking entry 1101167 as a duplicate of entry 2012432.	1101167.cif
190346	2017-01-10	cif/1/10/11/ (antanas@echidna.ibt.lt) Updating bibliography in entry 1101167.	1101167.cif
190345	2017-01-10	cif/1/10/11/ (antanas@echidna.ibt.lt) Moving the _atom_site_adp_type data item from the _atom_site_aniso loop to the _atom_site loop in entry 1101167.	1101167.cif
130149	2015-01-27	cod/ (saulius@kolibris) Deriving Hall space group symbols for 12003 CIFs using the 'cif_filter --estimate-spacegroup' command.	1101167.cif
35911	2012-02-28	cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree.	1101167.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.	1101167.cif
846	2009-11-14	cif/ Fixing _journal_volume values that had series letters prepended to them. Now the series letters are appended to the _journal_name_full, if needed, and the _journal_volume is purely numeric. To mimimise textual changes to CIFs this was done in several stages. First of all, a list of _journal_volume was compiled from the COD CIF collection: bash -xc 'find ? -name \*.cif \ \| xargs cif_values \ --file \ --tag _journal_volume' \ >& cod-journal-volumes-`-date`.log & giving us a cod-journal-volumes-2009.11.13.log file (committed for reference as well). Then a list of volume names with letters was extracted and most of them transformed automatically into a correct form: awk '$3~/^[A-Z][0-9]/' cod-journal-volumes-2009.11.13.log \ \| awk '{print $1}' \ \| xargs -n1 -iI \ bash -c 'echo === I ===;\ awk "/^#/,/^data_/{print}/^data_/{exit}" I > tmp-$$; \ cif_adjust_journal_name_volume I \ \| grep -E "_journal_name_full\|_journal_volume" >> tmp-$$; \ awk "/^data_/,/\$eof/" I \ \| grep -vE "^(data_\|_journal_name_full\|_journal_volume)" >> tmp-$$;\ mv -v tmp-$$ I' Note that this procedure assumes that all tags are at the beginning of the line, each value follows its tag on the same line, and there is only one tag per line. This procedure is not suitable for general CIFs, but fortunately, only very few CIFs in COD do not conform these rules. After the automatic conversion, a syntax check was run: svn st ? \ \| awk '{print $NF}' \ \| xargs -n1 -iI sh -c 'echo -n I"\r"; vcif -l 2048 I \|\| echo "!!! I !!!\n"' Entries that were found to have errors (very few, less than 10) were reverted and fixed manually. The entries that had letters embedded into them were grepped separately: awk '$3~/[A-Z][0-9]/' cod-journal-volumes-2009.11.13.log \ \| awk '$3~/^[^A-Z]/' and fixed manually. After all fixes, the previous 'vcif' test was rerun, yielding no syntax errors, and in addition a 'cif_filter' roundtrip test was run: svn st ? \ \| awk '{print $NF}' \ \| xargs -n1 -iI \ bash -c ' \ echo -en I "\r"; \ diff \ <(cif_filter I >& /dev/null) \ <(cif_filter I \| cif_filter >& /dev/null) \ \|\| echo "!!! I !!!\n"' This last test discovered one misspelled '_journal_yrae' tag in the 2/2003193.cif entry that was fixed by hand.	1101167.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/'	1101167.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	1101167.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.	1101167.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)	1101167.cif