Crystallography Open Database

Information card for entry 2223859

Preview

Coordinates	2223859.cif
Structure factors	2223859.hkl
Original IUCr paper	HTML
External links	ChemSpider

Structure parameters

Chemical name	Methyl pyrazine-2-carboxylate
Formula	C6 H6 N2 O2
Calculated formula	C6 H6 N2 O2
SMILES	c1c(C(=O)OC)nccn1
Title of publication	Methyl pyrazine-2-carboxylate
Authors of publication	Zhang, Chang-Hua; Tan, Xue-Jie; Xing, Dian-Xiang
Journal of publication	Acta Crystallographica Section E
Year of publication	2009
Journal volume	65
Journal issue	11
Pages of publication	o2902
a	3.865 ± 0.002 Å
b	6.69 ± 0.004 Å
c	24.92 ± 0.02 Å
α	90°
β	90°
γ	90°
Cell volume	644.4 ± 0.7 Å³
Cell temperature	298 ± 2 K
Ambient diffraction temperature	298 ± 2 K
Number of distinct elements	4
Space group number	19
Hermann-Mauguin space group symbol	P 21 21 21
Hall space group symbol	P 2ac 2ab
Residual factor for all reflections	0.1059
Residual factor for significantly intense reflections	0.0661
Weighted residual factors for significantly intense reflections	0.1362
Weighted residual factors for all reflections included in the refinement	0.1527
Goodness-of-fit parameter for all reflections included in the refinement	1.051
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
201978 (current)	2017-10-13	cif/2/ Marking COD entries in range 2/22 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	2223859.cif 2223859.hkl
181159	2016-04-03	hkl/2/22/ (antanas@echidna) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/22/38.	2223859.cif 2223859.hkl
176789	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/22.	2223859.cif 2223859.hkl
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2223859.cif 2223859.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.	2223859.cif 2223859.hkl
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2223859.cif 2223859.hkl
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2223859.cif 2223859.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).	2223859.cif 2223859.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.	2223859.cif 2223859.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.	2223859.cif 2223859.hkl
927	2009-12-10	hkl/ Adding Fobs files for the most recent Acta Cryts. deposited coordinates.	2223859.cif 2223859.hkl
915	2009-12-07	cif/2/ Adding CIFs from the Acta-Cryst-C-2009_11/ and Acta-Cryst-E-2009_11/ deposition.	2223859.cif