Crystallography Open Database

Information card for entry 7108239

Preview

Coordinates	7108239.cif
Original paper (by DOI)	HTML
External links	PubChem

Structure parameters

Chemical name	(Z)-Ethyl 2-(7-((trimethylsilyl)ethynyl)isochroman-1-ylidene)acetate
Formula	C18 H22 O3 Si
Calculated formula	C18 H22 O3 Si
SMILES	C(=O)(/C=C\1c2c(CCO1)ccc(c2)C#C[Si](C)(C)C)OCC
Title of publication	Organic acid induced olefination reaction of lactones
Authors of publication	Hikaru Yanai; Takeo Taguchi
Journal of publication	Chem.Commun.
Year of publication	2012
Journal volume	48
Pages of publication	8967
a	19.733 ± 0.005 Å
b	12.199 ± 0.003 Å
c	7.4044 ± 0.0017 Å
α	90°
β	100.236 ± 0.003°
γ	90°
Cell volume	1754 ± 0.7 Å³
Cell temperature	90 K
Ambient diffraction temperature	90 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	0.0432
Residual factor for significantly intense reflections	0.0375
Weighted residual factors for significantly intense reflections	0.0921
Weighted residual factors for all reflections included in the refinement	0.0959
Goodness-of-fit parameter for all reflections included in the refinement	1.025
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
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.	7108239.cif
180186	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 7/10/82.	7108239.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.	7108239.cif
64467	2012-08-16	cif/ Adding structures of 7108238, 7108239 via cif-deposit CGI script.	7108239.cif