Crystallography Open Database

Information card for entry 9014504

Preview

Coordinates	9014504.cif
External links	AMCSD

Structure parameters

Mineral name	Svenekite
Formula	As2 Ca H4 O8
Calculated formula	As2 Ca H4 O8
Title of publication	The crystal structure of calcium dihydrogen arsenate, Ca(H2AsO4)2
Authors of publication	Chiari, G.; Ferraris, G.
Journal of publication	Atti della Accademia delle Scienze di Torino, Classe di Scienze Fisiche, Matematiche e Naturali
Year of publication	1971
Journal volume	105
Pages of publication	725 - 743
a	8.558 Å
b	7.697 Å
c	5.721 Å
α	92.583°
β	109.867°
γ	109.983°
Cell volume	327.494 Å³
Number of distinct elements	4
Space group number	2
Hermann-Mauguin space group symbol	P -1
Hall space group symbol	-P 1
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
283658 (current)	2023-05-10	cod/ (saulius@tasmanijos-velnias) Estimating atom types and attached hydrogen counts using the new cod-tools scripts [1], for those AMCSD files that had Wat or O-H or OW atoms, and where declared and computed formula matches after the update. Several files were spotted manually where attached hydrogen counts will need to be updated to match the title formula. The update command was: 553 ( set -x; directory-metadata; grep ^9 formula-with-estimated-atoms-all.tsv \| grep = \| awk '{print $1}' \| sort -u \| codid2file \| xargs -i bash -c 'Z=$(cifvalues --no-dataname --tag _cell_formula_units_Z {}); if [ $Z = "?" ]; then NEW_Z=$(cif_estimate_Z {}); fi; cif_guess_AMCSD_atom_types {} \| (if [ $Z = "?" -a -n "$NEW_Z" ]; then cif_select --invert --tag _cell_formula_units_Z \| cat - <(echo _cell_formula_units_Z $NEW_Z); else cat; fi) \| cif_filter --add-cif-header {} \| sponge {}; echo Updated: {}'; date ) &> update-files-with-matching-formulae.log & run in the working copy of the repo [2]. Ref.: [1] saulius@tasmanijos-velnias COD/ $ svn info ~/src/cod-tools Path: /home/saulius/src/cod-tools Working Copy Root Path: /home/saulius/src/cod-tools URL: svn://cod.ibt.lt/cif-tools/trunk Relative URL: ^/trunk Repository Root: svn://cod.ibt.lt/cif-tools Repository UUID: 04be6746-3802-0410-999d-98508da1e98c Revision: 9577 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 9577 Last Changed Date: 2023-05-10 16:36:19 +0300 (Wed, 10 May 2023) [2] saulius@tasmanijos-velnias cod-entries-Wat-O-H-atoms/ $ svn info Path: . Working Copy Root Path: /home/saulius/tmp URL: svn+ssh://saulius.grazulis.lt/home/saulius/svn-repositories/tmp/COD/cod-entries-Wat-O-H-atoms Relative URL: ^/COD/cod-entries-Wat-O-H-atoms Repository Root: svn+ssh://saulius.grazulis.lt/home/saulius/svn-repositories/tmp Repository UUID: d3bd5daf-38a0-45fb-a3f8-6742599c9cef Revision: 580 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 580 Last Changed Date: 2023-05-06 10:43:38 +0300 (Sat, 06 May 2023)	9014504.cif
201816	2017-10-06	cod/ Enhancement: marking COD entries that are known to be related to the AMCSD entries using the _cod_related_entry data loop.	9014504.cif
188358	2016-11-09	cif/9 Marking attached hydrogen atoms.	9014504.cif
176465	2016-02-16	cif/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in range 9.	9014504.cif
86000	2013-05-09	cif/ (saulius@koala.ibt.lt) Adding new mineral structures from AMCSD.	9014504.cif