Crystallography Open Database

Information card for entry 1001274

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Structure parameters

Chemical name	POTASSIUM BARIUM SILICOTANTALATE *
Formula	Ba K4 O26 Si4 Ta6
Calculated formula	Ba0.9999 K4.0002 O26 Si4 Ta6
Title of publication	Silicotantalates et siliconiobates non-stoechiometriques: les composes K~6-2x~ Ba~x~ Ta~6~ Si~4~ O~26~ (0<x<3) et K~8~ M~14~ Si~4~ O~47~ (M = Ta, Nb)
Authors of publication	Choisnet, J; Nguyen, N; Raveau, B
Journal of publication	Materials Research Bulletin
Year of publication	1977
Journal volume	12
Pages of publication	91 - 96
a	9.047 Å
b	9.047 Å
c	7.81 Å
α	90°
β	90°
γ	120°
Cell volume	553.6 Å³
Number of distinct elements	5
Space group number	189
Hermann-Mauguin space group symbol	P -6 2 m
Hall space group symbol	P -6 -2
Residual factor for all reflections	0.061
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.	1001274.cif
120071	2014-07-11	Adding DOIs to range 1 structures.	1001274.cif
35911	2012-02-28	cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree.	1001274.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.	1001274.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/'	1001274.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	1001274.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.	1001274.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)	1001274.cif