Crystallography Open Database

Information card for entry 7106638

Preview

Coordinates	7106638.cif
Original paper (by DOI)	HTML
External links	PubChem

Structure parameters

Formula	C20 H22 N4 O4
Calculated formula	C20 H22 N4 O4
Title of publication	Imidazolium ylides from a conjugate addition-proton transfer route and their cycloaddition reactions
Authors of publication	Raymond C. F. Jones; James N. Iley; Maria Sanchis-Amat; Xiaohui Zhang; Vickie McKee; Simon J. Coles; Thomas Gelbrich
Journal of publication	Chem.Commun.
Year of publication	2011
Journal volume	47
Pages of publication	7965
a	6.561 ± 0.003 Å
b	9.171 ± 0.004 Å
c	32.072 ± 0.013 Å
α	90°
β	94.608 ± 0.006°
γ	90°
Cell volume	1923.6 ± 1.4 Å³
Cell temperature	150 ± 2 K
Ambient diffraction temperature	150 ± 2 K
Number of distinct elements	4
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	0.1062
Residual factor for significantly intense reflections	0.0834
Weighted residual factors for significantly intense reflections	0.207
Weighted residual factors for all reflections included in the refinement	0.2177
Goodness-of-fit parameter for all reflections included in the refinement	1.139
Diffraction radiation wavelength	0.8464 Å
Diffraction radiation type	synchrotron
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
301853 (current)	2025-08-22	Add cross-references to PubChem compounds in COD range 7/10/ Each referenced PubChem compound corresponds to the full crystal structure.	7106638.cif
180170	2016-03-26	cif/7/10/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 7/10/66.	7106638.cif
106525	2014-03-15	cif/ (saulius@koala.ibt.lt) Adding DOIs to those Chem. Comm. structure descriptions that did not have it before and that could be matched unambiguously. Unambiguously means: a) journal name is "like 'Chem%Com%'" in SQl parlour b) first author's last name is the same in COD and in PubMed b) publication year and first page are the same in COD and in PubMed database. The commands to change these files where: awk '{print $1, $2}' outputs/join-dois.tab \ \| xargs -i sh -c ' CODID=$(echo {} \| awk "{print \$1}"); DOI=$(echo {} \| awk "{print \$2}"); CODFILE=$(echo $CODID \| codid2file); if ! grep -q _journal_paper_doi $CODFILE; then ( set -x; echo _journal_paper_doi $DOI >> $CODFILE ); else echo $CODID already has DOI; fi' Some files that did not had new-line at the end had to be fixed afterwards (in the ~/struct/cod/cif/7 directory, a COD working copy): svn st \ \| awk '{print $2}' \ \| xargs cifparse -q 2> /dev/null \ \| awk -F"'" '{print $2}' \ \| xargs perl -i -pe 's/_journal_paper_doi/\n_journal_paper_doi/' The working copy containing 'outputs/join-dois.tab' was: Path: /home/saulius/struct/xyz-extraction/dois/chem-comm-refetched-from-pubmed URL: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction/dois/chem-comm-refetched-from-pubmed Repository Root: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction Repository UUID: 9acf3947-1f02-0410-ae2a-984b57ad209b Revision: 2871 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 2871 Last Changed Date: 2014-03-15 11:18:46 +0200 (Sat, 15 Mar 2014) Three conflicts in files 10/81/7108128.cif, 10/81/7108130.cif and 10/99/7109903.cif were resolved manually.	7106638.cif
35909	2012-02-26	cif/7/: reorganising range 7 into a prefix-directory tree.	7106638.cif
22741	2011-07-12	../uploads/cif-deposit/cod/cif Adding structures of 7106638, 7106639, 7106640 via cif-deposit CGI script.	7106638.cif