Crystallography Open Database

Information card for entry 9011656

Preview

Coordinates	9011656.cif
Original paper (by DOI)	HTML
External links	AMCSD

Structure parameters

Common name	Silicon
Mineral name	Silicon
Formula	Si
Calculated formula	Si
SMILES	[Si]
Title of publication	New high-pressure phase of Si Sample: structure exists between 13 GPa to 18 GPa Note: intermediate structure between those of Si II and Si V
Authors of publication	McMahon, M. I.; Nelmes, R. J.
Journal of publication	Physical Review B
Year of publication	1993
Journal volume	47
Pages of publication	8337 - 8340
a	4.737 Å
b	4.502 Å
c	2.55 Å
α	90°
β	90°
γ	90°
Cell volume	54.381 Å³
Number of distinct elements	1
Space group number	74
Hermann-Mauguin space group symbol	I m m a
Hall space group symbol	-I 2b 2
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
291877 (current)	2024-05-16	Inserting missing Z values in most entries in the 9 range	9011656.cif
282068	2023-03-26	cod/ (saulius@tasmanijos-velnias) Adding the '_cod_related_entry_...' loop to those COD AMCSD entries that lacked it, and adding the related AMCSD database ID to this loop.	9011656.cif
282053	2023-03-24	cod/ (saulius@tasmanijos-velnias) Updating the existing COD records from the recent AMCSD downloads: - Adding AMCSD IDs to those COD records that exacly matched the AMCSD structures (comparing unit cells, space groups, coordinates and measurement conditions) but did not yet have the AMCSD ID; - Adding new mineral names, compound sources, measurement conditions (when those were missing) and other informations from the AMCSD CIFs.	9011656.cif
120115	2014-07-12	Adding DOIs to range 9 structures.	9011656.cif
85285	2013-05-05	cod/ (saulius@koala.ibt.lt) Removing outdated _amcsd_database_code data items from all series 9 CIFs.	9011656.cif
77877	2013-03-29	cod/ (saulius@koala.ibt.lt) Removing mineral names from those crystal structures that do not actually describe minerals (e.g. synthetic entries; data source: file COD-minerals.xlsx from my 2012-08-24 15:47 e-mail).	9011656.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)	9011656.cif
35913	2012-02-28	cif/9/ Reorganising range 9 into a prefix-directory tree. Range 9 is the last range to be reorganised.	9011656.cif
1210	2010-06-10	cif/9/ Updating 13213 AMCSD CIFs, taking new data from the AMCSD database and adding the assigned AMCSD numbers.	9011656.cif
1071	2010-04-10	cif/9/ Updating COD entries from AMCSD, processed in the AMCSD-resynchronisation-2009.06.24/ directory. Entries are updated if they could be unambiguously mapped to a unique COD number by automatic search scripts in AMCSD-resynchronisation-2009.06.24/.	9011656.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.	9011656.cif
903	2009-11-23	cif/ Setting svn:keywords property on those CIFs that did not have them.	9011656.cif
649	2009-04-18	Depositing new CIFs from AMCSD-resynchronisation-2009.03.27/.	9011656.cif