Crystallography Open Database

Information card for entry 2211657

Preview

Coordinates	2211657.cif
Original IUCr paper	HTML
External links	ChemSpider

Structure parameters

Chemical name	ethyl 6-oxo-1,6-dihydropyrimidine-5-carboxylate‒ethyl 4-oxo-1,4-dihydropyrimidine-5-carboxylate (1/1)
Formula	C7 H8 N2 O3
Calculated formula	C7 H8 N2 O3
SMILES	C1(C(=O)N=CNC=1)C(=O)OCC
Title of publication	Two tautomers in one crystal structure: ethyl 6(4)-oxo-1,6(1,4)-dihydropyrimidine-5-carboxylate
Authors of publication	De-Jun Xiong; Cui-Ping Han; Hai-Bing Li
Journal of publication	Acta Crystallographica Section E
Year of publication	2006
Journal volume	62
Journal issue	12
Pages of publication	o5501 - o5502
a	4.768 ± 0.003 Å
b	25.59 ± 0.016 Å
c	12.821 ± 0.008 Å
α	90°
β	97.687 ± 0.01°
γ	90°
Cell volume	1550.3 ± 1.7 Å³
Cell temperature	292 ± 2 K
Ambient diffraction temperature	292 ± 2 K
Number of distinct elements	4
Space group number	9
Hermann-Mauguin space group symbol	C 1 c 1
Hall space group symbol	C -2yc
Residual factor for all reflections	0.0767
Residual factor for significantly intense reflections	0.0527
Weighted residual factors for significantly intense reflections	0.1088
Weighted residual factors for all reflections included in the refinement	0.1176
Goodness-of-fit parameter for all reflections included in the refinement	1.033
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
201974 (current)	2017-10-13	cif/2/ Marking COD entries in range 2/21 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	2211657.cif
176787	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/21.	2211657.cif
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2211657.cif
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2211657.cif
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2211657.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).	2211657.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.	2211657.cif
5310	2011-01-02	cif/ Running cif_fix_enum with the core CIF dictionary on COD ranges 2, 8 and 9. Range 9 remained unchanged, and in ranges 2 and 8 there were 17309 modified files, most changes were fixes enumerator case.	2211657.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.	2211657.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.	2211657.cif
326	2008-04-03	Adding all Acta Cryst. B, C, and E missing retrospective CIF files up to 2008 February, generated from the files that were automatically downloaded from the IUCr site.	2211657.cif