Crystallography Open Database

Information card for entry 1010936

Preview

Coordinates	1010936.cif
External links	AMCSD: 0010504, 0010505

Structure parameters

Chemical name	Iron carbide (3/1)
Mineral name	Cohenite
Formula	C Fe3
Calculated formula	C Fe3
SMILES	[Fe].[Fe].[Fe].[C]
Title of publication	The Crystal Structure of Cementite
Authors of publication	Hendricks, B S
Journal of publication	Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977)
Year of publication	1930
Journal volume	74
Pages of publication	534 - 545
a	4.518 Å
b	5.069 Å
c	6.736 Å
α	90°
β	90°
γ	90°
Cell volume	154.3 Å³
Number of distinct elements	2
Space group number	62
Hermann-Mauguin space group symbol	P b n m
Hall space group symbol	-P 2c 2ab
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
293657 (current)	2024-08-03	Replacing '_amcsd_database_code' to '_database_code_amcsd' in the remaining three COD entries.. cod/ (saulius@starta)	1010936.cif
287548	2023-11-11	cod/ (saulius@tasmanijos-velnias) Automatically adding AMCSD codes and alternative mineral names to 162 COD entries: 565 tail -n +3 outputs/amcsd-cod-exact-new-matches.tsv \| awk '$NF !~ /,/ {print $3, $4}' \| tr ',' ' ' \| xargs -i bash -c 'ID1=$(awk "{print \$1}" <<< "{}"); ID2=$(awk "{print \$2}" <<< "{}"); CODID=$(awk "{print \$3}" <<< "{}"); source functions.sh; echo -e "_amcsd_database_code $ID1"; M1=$(cifvalues --no-dataname --tag _chemical_name_mineral $(amcsd2file $ID1)); M2=$(cifvalues --no-dataname --tag _chemical_name_mineral $(amcsd2file $ID2)); set -x; (if grep -q _cod_related_entry $(codid2file $CODID); then N=$(tail -n 1 $(codid2file $CODID) \| awk "{print \$1}"); else N=0; echo -e "loop_\n_cod_related_entry_id\n_cod_related_entry_database\n_cod_related_entry_code"; fi; echo -e "$(expr $N + 1) AMCSD $ID1\n$(expr $N + 2) AMCSD $ID2"; echo -e "loop_\n_[local]_alternative_name_id\n_[local]_alternative_name_type\n_[local]_alternative_name_source\n_[local]_alternative_name_source_id\n_[local]_alternative_name_value\n1 mineral AMCSD $ID1 \"$M1\"\n2 mineral AMCSD $ID2 \"$M2\""; echo "_amcsd_database_code $ID1") \| tee -a $(codid2file $CODID)'; The command was performed in the working copy: Working Copy Root Path: /home/saulius/struct/COD-crude-data URL: svn+ssh://www.crystallography.net/home/coder/svn-repositories/COD-crude-data/archives/2021/correspondence-AMCSD-COD Relative URL: ^/archives/2021/correspondence-AMCSD-COD Repository Root: svn+ssh://www.crystallography.net/home/coder/svn-repositories/COD-crude-data Repository UUID: f03e6fd5-de02-4a89-aa47-d94ad8425ebd Revision: 7437 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 7436 Last Changed Date: 2023-11-11 09:56:27 +0200 (Sat, 11 Nov 2023)	1010936.cif
278158	2022-09-25	cod/ Reformatted the summary chemical formuale using the 'cif_filter' program.	1010936.cif
130149	2015-01-27	cod/ (saulius@kolibris) Deriving Hall space group symbols for 12003 CIFs using the 'cif_filter --estimate-spacegroup' command.	1010936.cif
77586	2013-03-28	cod/cif/ (saulius@koala.ibt.lt) Merging mineral data updates (_chemical_name_mineral, _chemical_name_common, structural formulae) sent to me by T.D. in his e-mail. The merge was done by the command: for i in split/*.cif do ( B=$(basename $i); C=$(echo $B\|awk '{print "/home/saulius/struct/cod/cif/"substr($0,1,1)"/"substr($0,2,2)"/"substr($0,4,2)"/"$0}'); ( set -x; cif_merge --over \ _chemical_name_mineral,_chemical_name_structure_type,_chemical_name_common,_chemical_name_systematic,_chemical_formula_structural,_chemical_formula_sum \ $C $i ) \ \| cif_filter --add-cif-header $C \ \| sponge $C ) done in the working copy of the following repository: URL: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction/contributions Repository Root: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction Repository UUID: 9acf3947-1f02-0410-ae2a-984b57ad209b Revision: 2625 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 2625 Last Changed Date: 2013-03-28 15:13:00 +0200 (Thu, 28 Mar 2013)	1010936.cif
35911	2012-02-28	cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree.	1010936.cif
20519	2011-06-11	smi/* and cif/* Adding SMILES for all structures with nel=1 in the mysql entries, supossed to be pure elements. For most of them, just the element symbol remains since SMILES strings and substructure search makes no sense for compact packed structures. Only for molecularly defined substances (for example cyclosulphur moieties) a proper SMILES string has been defined. This does not add too much funcionality to substructure search but flags a large number of structures as "SMILES done". Some of them were found to be not pure elements (carbides, boranes, hydrocarbons) but were added anyway. CIF files and SQL entries have been fixed for these as well as for other with obviously wrong formulas.	1010936.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.	1010936.cif
720	2009-05-13	cod/cif/: Adding loop_ token in front of the _publ_author_name tag in all COD entries where _publ_author_name was not in a loop (this tag is loop-mandatory).	1010936.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/'	1010936.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	1010936.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.	1010936.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)	1010936.cif