Crystallography Open Database

Information card for entry 2103957

Preview

Coordinates	2103957.cif
Structure factors	2103957.hkl
Original IUCr paper	HTML

Structure parameters

Chemical name	Tetramethylammonium perchlorate
Formula	C4 H12 Cl N O4
Calculated formula	C4 H12 Cl N O4
SMILES	C[N+](C)(C)C.Cl(=O)(=O)(=O)[O-]
Title of publication	The phases of [(CH~3~)~4~N](ClO~4~) at low temperature
Authors of publication	Palacios, Elías; Burriel, Ramón; Ferloni, Paolo
Journal of publication	Acta Crystallographica Section B
Year of publication	2003
Journal volume	59
Journal issue	5
Pages of publication	625 - 633
a	11.714 ± 0.003 Å
b	11.784 ± 0.003 Å
c	5.8265 ± 0.0009 Å
α	90°
β	90°
γ	90°
Cell volume	804.3 ± 0.3 Å³
Cell temperature	150 ± 1 K
Ambient diffraction temperature	150 ± 5 K
Number of distinct elements	5
Space group number	18
Hermann-Mauguin space group symbol	P 21 21 2
Hall space group symbol	P 2 2ab
Residual factor for all reflections	0.0983
Residual factor for significantly intense reflections	0.0867
Weighted residual factors for significantly intense reflections	0.2334
Weighted residual factors for all reflections included in the refinement	0.2477
Goodness-of-fit parameter for all reflections included in the refinement	1.877
Diffraction radiation wavelength	0.71073 Å
Diffraction radiation type	MoKα
Has coordinates	Yes
Has disorder	No
Has F_obs	Yes

Version history

Revision	Date	Message	Files
180899 (current)	2016-04-02	hkl/2/10/ (antanas@echidna) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/10/39.	2103957.cif 2103957.hkl
176768	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/10.	2103957.cif 2103957.hkl
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2103957.cif 2103957.hkl
88064	2013-08-29	Adding _cod_database_fobs_code data item to all COD CIFs that have Fobs deposited and did not have this data item yet.	2103957.cif 2103957.hkl
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2103957.cif 2103957.hkl
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2103957.cif 2103957.hkl
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).	2103957.cif 2103957.hkl
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.	2103957.cif 2103957.hkl
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.	2103957.cif 2103957.hkl
691	2009-05-03	Depositing the first portion of the Fobs data CIFs. These are CIFs from the Acta Cryst. journals, where the correspondence of the coordinate CIF and the Fobs CIF could be unambiguously determined automatically. In these files, cell constatnts match exctely, being equal with the floating point '==' operator in Perl. For the future depositions, such requirement is too strict, since sometimes cell constants in the coordinate and the Fobs files differ by a rounding error. Thus, a small tollerance will have to be introduced into the COD Fobs deposition scripts.	2103957.cif 2103957.hkl
397	2008-06-20	Adding new CIF files deposited from Acta-Cryst-B-2001-2003/.	2103957.cif