Crystallography Open Database

Information card for entry 2204812

2204811 << 2204812 >> 2204813

Preview

Coordinates	2204812.cif
Original IUCr paper	HTML
External links	ChemSpider

Structure parameters

Chemical name	beta-monoclinic cyclooctaselenium
Formula	Se8
Calculated formula	Se8
SMILES	[Se]1[Se][Se][Se][Se][Se][Se][Se]1
Title of publication	A low-temperature redetermination of the monoclinic β-form of cyclooctaselenium
Authors of publication	Tiina Maaninen; Jari Konu; Risto S. Laitinen
Journal of publication	Acta Crystallographica Section E
Year of publication	2004
Journal volume	60
Journal issue	12
Pages of publication	o2235 - o2237
a	9.2004 ± 0.0018 Å
b	8 ± 0.0016 Å
c	12.735 ± 0.003 Å
α	90°
β	92.95 ± 0.03°
γ	90°
Cell volume	936.1 ± 0.3 Å³
Cell temperature	150 ± 2 K
Ambient diffraction temperature	150 ± 2 K
Number of distinct elements	1
Space group number	14
Hermann-Mauguin space group symbol	P 1 21/c 1
Hall space group symbol	-P 2ybc
Residual factor for all reflections	0.0584
Residual factor for significantly intense reflections	0.04
Weighted residual factors for significantly intense reflections	0.0874
Weighted residual factors for all reflections included in the refinement	0.0954
Goodness-of-fit parameter for all reflections included in the refinement	1.091
Diffraction radiation wavelength	0.71073 Å
Diffraction radiation type	MoKα
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
201973 (current)	2017-10-13	cif/2/ Marking COD entries in range 2/20 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	2204812.cif
176774	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/20.	2204812.cif
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2204812.cif
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2204812.cif
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2204812.cif
26029	2011-09-17	cif/2/ Reverting changes of revision 25271: ( cd cif/2/; svn merge -r25271:25270 . ) The problem was that the reprocessed files from IUCr, although were more complete, "resurrected" data errors that were corrected in the previous recisions. The additional data that have been extracted during the reprocessing will have to be merged without overwriting the existing values in COD files, except some explicit and controlled cases (such as publication titles and chemical names).	2204812.cif
25271	2011-09-10	cif/2/ Adding reporocessed IUCr CIFs for the years 1980-2010. The CIFs now contain more complete bibliography, substance names, correctly unfolded text fields (using the CIF line unfolding protocol), explicitely set cell angles, and _cod_data_source_block fields.	2204812.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.	2204812.cif
853	2009-11-16	cif/ Reconstructing spacegroup designators from the symmetry operators were possible. The comands used can be found in the log file reformat-spacegroups-2009.11.14.log committed with the current revision. Only lines that contained spacegroup designators were changed, and all files pass vcif test after the conversion.	2204812.cif
321	2008-03-30	Changing the COD CIF files header (comments) in all files that were recently deposited from the IUCr autodownloaded sources to the text agreed with IUCr.	2204812.cif
101	2008-02-08	Renaming the '_[local]_cod_original_file' tag into '_[local]_cod_data_source_file'. This reflects better the actual usage of the mentioned files -- they were used for data extraction, but not as originals for verbatim copying.	2204812.cif
87	2008-02-04	Adding CIF files from ActaE2004-Issues-4-12/ (1465 files).	2204812.cif