Crystallography Open Database

Information card for entry 7217587

Preview

Coordinates	7217587.cif
Original paper (by DOI)	HTML

Structure parameters

Formula	C6 H14 Ca Cl2 N2 O5
Calculated formula	C6 H6 Ca Cl2 N2 O5
Title of publication	Crystal form selectivity by humidity control: the case of the ionic co-crystals of nicotinamide and CaCl2
Authors of publication	Braga, Dario; Grepioni, Fabrizia; Lampronti, Giulio I.; Maini, Lucia; Rubini, Katia; Turrina, Alessandro; Zorzi, Federico
Journal of publication	CrystEngComm
Year of publication	2014
Journal volume	16
Journal issue	32
Pages of publication	7452
a	17.5215 ± 0.0006 Å
b	11.4158 ± 0.0004 Å
c	6.7943 ± 0.0002 Å
α	90°
β	90°
γ	90°
Cell volume	1359.01 ± 0.08 Å³
Cell temperature	293 K
Ambient diffraction temperature	293 K
Number of distinct elements	6
Space group number	33
Hermann-Mauguin space group symbol	P n a 21
Hall space group symbol	P 2c -2n
Residual factor R(I) for significantly intense reflections	0.03117
Goodness-of-fit parameter for all reflections	1.46
Method of determination	powder diffraction
Diffraction radiation wavelength	1.5406 Å
Diffraction radiation type	CuKα
Duplicate of	7216634
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
205493 (current)	2018-01-23	cif/ Removing the _chemical_name_mineral data item that contains an empty value from multiple files.	7217587.cif
176453	2016-02-16	cif/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in range 7.	7217587.cif
124581	2014-10-05	cif/ (saulius@koala.ibt.lt) Marking up 890 duplicates of COD. The duplicates were indentified as entries havin identical DOIs, cell length parameters and formulae, unspecified or identical RI R-factors, and not already marked as duplicates or suboptimal structures. Furthermore, coordinates had to be identical when comparing results of cif2ref conversion: codsql \ 'select d1.file, d1.doi, d2.file, d2.doi from data as d1 join data as d2 on d1.doi = d2.doi where d1.a = d2.a and d1.b = d2.b and d1.c = d2.c and d1.duplicateof is null and d2.duplicateof is null and d1.optimal is null and d2.optimal is null and (d1.RI is null or d2.RI is null or d1.RI = d2.RI) and d1.file > d2.file and (d1.formula = d2.formula or d1.calcformula = d2.calcformula)' \ -NB \ \| awk '{print $1, $3}' \ \| xargs codid2file \ \| xargs -n2 \ \| xargs -i bash -c ' \ CIF1=$(echo {} \| awk "{print \$1}"); \ CIF2=$(echo {} \| awk "{print \$2}"); \ echo -e "\n=== {} ==="; \ diff -bw -u <(cif2ref $CIF1) <(cif2ref $CIF2)' \ \| perl -00 -ne 'print unless /^(-\|\+)/m' \ \| grep . > ~/duplicates-2014-10-05.lst The resulting '~/duplicates-2014-10-05.lst' was post-processed as follows: awk '{print $2, $3}' duplicates-2014-10-05.lst \ \| xargs -i bash -c ' \ ID2=$(basename $(echo {} \| awk "{print \$2}") .cif); \ CIF1=$(echo {} \| awk "{print \$1}"); \ set -x; echo _cod_duplicate_entry $ID2 >> $CIF1' Structures from one powder diffraction paper were reverted: svn revert /home/saulius/struct/cod/cif/4/12/19/412199[567].cif And two files with more than one duplicate identified were fixed by hand: emacs -nw /home/saulius/struct/cod/cif/7/05/43/7054322.cif emacs -nw /home/saulius/struct/cod/cif/7/05/43/7054325.cif	7217587.cif
121493	2014-08-06	cif/ Adding structures of 7217586, 7217587 via cif-deposit CGI script.	7217587.cif