Crystallography Open Database

Information card for entry 7103099

Preview

Coordinates	7103099.cif
Original paper (by DOI)	HTML
External links	ChemSpider; PubChem

Structure parameters

Formula	C18 H20 Si
Calculated formula	C18 H20 Si
SMILES	c12ccccc1cc1ccccc1c2C[Si](C)(C)C
Title of publication	Solid state structures and photophysical properties of (trimethylsilyl)methyl-substituted anthracenes and pyrenes.
Authors of publication	Shimizu, Masaki; Tatsumi, Hironori; Mochida, Kenji; Hiyama, Tamejiro
Journal of publication	Chemical communications (Cambridge, England)
Year of publication	2008
Journal issue	18
Pages of publication	2134 - 2136
a	17.266 ± 0.004 Å
b	7.1904 ± 0.0017 Å
c	25.133 ± 0.006 Å
α	90°
β	90°
γ	90°
Cell volume	3120.2 ± 1.3 Å³
Cell temperature	300 ± 2 K
Ambient diffraction temperature	300 ± 2 K
Number of distinct elements	3
Space group number	61
Hermann-Mauguin space group symbol	P b c a
Hall space group symbol	-P 2ac 2ab
Residual factor for all reflections	0.0669
Residual factor for significantly intense reflections	0.0496
Weighted residual factors for significantly intense reflections	0.1288
Weighted residual factors for all reflections included in the refinement	0.1415
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.	7103099.cif
202017	2017-10-14	cif/ Marking COD entries in range 7 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	7103099.cif
180132	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 7/10/30.	7103099.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.	7103099.cif
35909	2012-02-26	cif/7/: reorganising range 7 into a prefix-directory tree.	7103099.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.	7103099.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.	7103099.cif
903	2009-11-23	cif/ Setting svn:keywords property on those CIFs that did not have them.	7103099.cif
686	2009-04-27	Depositing 857 CIFs from Chem-Comm-2008.	7103099.cif