Crystallography Open Database

Information card for entry 2002203

2002202 << 2002203 >> 2002204

Preview

Coordinates	2002203.cif
Original paper (by DOI)	HTML

Structure parameters

Chemical name	Dicalcium diniobate
Formula	Ca2 Nb2 O7
Calculated formula	Ca2 Nb2 O7
Title of publication	Zur Kristallstruktur von Ca2 Nb2 O7
Authors of publication	Scheunemann, K; Mueller-Buschbaum, Hk
Journal of publication	Journal of Inorganic and Nuclear Chemistry
Year of publication	1974
Journal volume	36
Pages of publication	1965 - 1970
a	26.45699 Å
b	5.501 Å
c	7.692 Å
α	90°
β	90°
γ	90°
Cell volume	1119.5 Å³
Number of distinct elements	3
Space group number	33
Hermann-Mauguin space group symbol	P n 21 a
Hall space group symbol	P -2ac -2n
Residual factor for all reflections	0.056
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
130149 (current)	2015-01-27	cod/ (saulius@kolibris) Deriving Hall space group symbols for 12003 CIFs using the 'cif_filter --estimate-spacegroup' command.	2002203.cif
120072	2014-07-11	Adding DOIs to range 2 structures.	2002203.cif
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2002203.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.	2002203.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/'	2002203.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	2002203.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.	2002203.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)	2002203.cif