About: Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3.

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About: Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The crystal structure of čejkaite, Na4(UO2)(CO3)3 , from the type locality, was determined for the first time by single-crystal X ray diffraction. In contrast to the previously reported pseudohexagonal triclinic symmetry, the current data indicate čejkaite is monoclinic, triply twinned, and belongs to the space group Cc. Refined unit-cell parameters are a=9.2919(8), b=16.0991(11), c=6.4436(3)Å, beta=91.404(5)°, and V=963.62(12) Å3. The monoclinic unit cell is also supported by the good fit to the powder diffraction data. The structure of čejkaite consists of uranyl tricarbonate clusters, for ming sheets sub-parallel to (001) by sharing edges with (Na)-polyhedra. Sheets are interconnected through the uranyl O atoms and columns of (Na1)-polyhedra that share their trigonal faces. All Na atoms in the structure are in sixfold coordination . The crystal structure of čejkaite, Na4(UO2)(CO3)3 , from the type locality, was determined for the first time by single-crystal X ray diffraction. In contrast to the previously reported pseudohexagonal triclinic symmetry, the current data indicate čejkaite is monoclinic, triply twinned, and belongs to the space group Cc. Refined unit-cell parameters are a=9.2919(8), b=16.0991(11), c=6.4436(3)Å, beta=91.404(5)°, and V=963.62(12) Å3. The monoclinic unit cell is also supported by the good fit to the powder diffraction data. The structure of čejkaite consists of uranyl tricarbonate clusters, for ming sheets sub-parallel to (001) by sharing edges with (Na)-polyhedra. Sheets are interconnected through the uranyl O atoms and columns of (Na1)-polyhedra that share their trigonal faces. All Na atoms in the structure are in sixfold coordination . (en)
Title	Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3. Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3. (en)
skos:prefLabel	Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3. Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3. (en)
skos:notation	RIV/68378271:_____/13:00397445!RIV14-GA0-68378271
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(EE2.3.20.0052), P(GAP204/11/0809), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Fejfarová, Karla Plášil, Jakub Dušek, Michal Rohlíček, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	102821
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/13:00397445
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	čejkaite; uranyl carbonate; symmetry; crystal structure; single-crystal; twinning; X-ray diffraction (en)
http://linked.open.../riv/klicoveSlovo	single-crystal X-ray diffraction crystal structure symmetry čejkaite uranyl carbonate twinning
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[8A9E40ED8456]
http://linked.open...i/riv/nazevZdroje	American Mineralogist
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Absorption, beam homogeneity and varying irradiated volume corrections in multidomain bulk and thin film samples. Research group for radioactive waste repository and nuclear safety
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	98
http://linked.open...iv/tvurceVysledku	Dušek, Michal Fejfarová, Karla Plášil, Jakub Škoda, R. Rohlíček, Jan
http://linked.open...ain/vavai/riv/wos	000317373200003
issn	0003-004X
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.2138/am.2013.4331

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