Crystallography Open Database

Information card for entry 7051091

Preview

Coordinates	7051091.cif
Original paper (by DOI)	HTML

Structure parameters

Formula	C12 H9 N O
Calculated formula	C12 H9 N O
Title of publication	Solution, solid state structure and fluorescence studies of 2,3-functionalized quinoxalines: evidence for a π-delocalized keto-enamine form with N‒H···O intramolecular hydrogen bonds
Authors of publication	Touzani, Rachid; Ben-Hadda, Taibi; Elkadiri, Sghir; Ramdani, Abdelkrim; Maury, Olivier; Le Bozec, Hubert; Toupet, Loic; Dixneuf, Pierre H.
Journal of publication	New Journal of Chemistry
Year of publication	2001
Journal volume	25
Journal issue	3
Pages of publication	391
a	23.255 ± 0.003 Å
b	11.484 ± 0.002 Å
c	6.936 ± 0.009 Å
α	90°
β	90°
γ	90°
Cell volume	1852 ± 2 Å³
Cell temperature	293 ± 2 K
Ambient diffraction temperature	293 ± 2 K
Number of distinct elements	4
Space group number	60
Hermann-Mauguin space group symbol	P b c n
Hall space group symbol	-P 2n 2ab
Residual factor for all reflections	0.1056
Residual factor for significantly intense reflections	0.0408
Weighted residual factors for significantly intense reflections	0.0957
Weighted residual factors for all reflections included in the refinement	0.1156
Goodness-of-fit parameter for all reflections included in the refinement	0.999
Diffraction radiation wavelength	0.71069 Å
Diffraction radiation type	MoKα
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
180064 (current)	2016-03-26	cif/7/05/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 7/05/10.	7051091.cif
120112	2014-07-12	Adding DOIs to range 7 structures.	7051091.cif
35909	2012-02-26	cif/7/: reorganising range 7 into a prefix-directory tree.	7051091.cif
5312	2011-01-03	cif/ Adding files, updated with the 'cif_fix_enum' program and the cif_core.dic dictionary. The enumerator values were fixed, mostly incorrect case, but also some values that had extra underscores, dashes or spaces. Unfortunately, 22 had non-ASCII characters with the 8-th bit set, and these got incorrectly interpreted as latin1 characters and converted to their UTF8 equivalents by Perl. To fix the structures, however, they need to be redeposited from the original files with the new CIFParser/cif_filter version.	7051091.cif
3898	2010-12-09	cif/ Adding the files from the 2004-2000-RSC/ processing directory identified for redeposition. Last page numbers were restored manually from the command line.	7051091.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.	7051091.cif
725	2009-05-14	cif/: Fixing the misspelled _atom_site_symetry_multiplicity tag: saulius@delfinas checks/ > pwd /home/saulius/struct/cod/cif/checks saulius@delfinas checks/ > find ../[2-9]/ -name \*.cif \ \| xargs grep -l _atom_site_symetry_multiplicity \ \| xargs -n1 -t \ perl -i -pe 's/_atom_site_symetry_multiplicity/_atom_site_symmetry_multiplicity/'	7051091.cif
19	2008-01-26	Changing all end-of-line codes from DOS style to UNIX style in all COD CIF files, for more convenient processing: In the cod/cif/ directory: ff \*.cif \| xargs perl -i -pe 's/\r\n/\n/'	7051091.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	7051091.cif
13	2008-01-13	Setting the svn:keywords property to "Author Date Revision URL Id" for all CIF files in the cod/cif directory.	7051091.cif
1	2007-11-30	Adding all .cif files from the COD, downloaded in a Cod.zip file on 2007.02.07 (and the same Cod.zip is downloadable today, on 2007.11.29)	7051091.cif