Reinvestigation of the crystal structure of kasolite, Pb[(UO2)(SiO4)](H2O), an important alteration product of uraninite, UO2-x.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00391674" target="_blank" >RIV/68378271:_____/13:00391674 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00023272:_____/13:#0002125 RIV/00216224:14310/13:00072873

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jnucmat.2010.11.064" target="_blank" >http://dx.doi.org/10.1016/j.jnucmat.2010.11.064</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnucmat.2010.11.064" target="_blank" >10.1016/j.jnucmat.2010.11.064</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reinvestigation of the crystal structure of kasolite, Pb[(UO2)(SiO4)](H2O), an important alteration product of uraninite, UO2-x.

Popis výsledku v původním jazyce

The crystal structure of kasolite, Pb[(UO2)(SiO4)](H2O), Z=4, monoclinic, with a=6.7050(3), b=6.9257(2), c=13.2857(5)A, b=105.064(4)°, V=595.74(3) A3, the space group P21/c, has been solved by charge-flipping method and refined by the full-matrix least-squares techniques to an agreement factor(Robs) of 2.2% for 1243 unique observed reflections. The crystal structure of kasolite contains 1 unique U6+ position that is part of a nearly linear uranyl ion (UO2)2+, coordinated in the equatorial plane by fiveO ligands, forming pentagonal bipyramid. The uranyl pentagonal bipyramid s share edges to form chains parallel to [010]. The additional edge of uranyl polyhedra is shared by silicate tetrahedra to form sheets parallel to (100). There is one unique position of Pb2+ in the interlayer. O ligands and 1 (H2O) non-transformer group coordinate Pb2+ exhibiting [2 + 6] coordination.

Název v anglickém jazyce

Reinvestigation of the crystal structure of kasolite, Pb[(UO2)(SiO4)](H2O), an important alteration product of uraninite, UO2-x.

Popis výsledku anglicky

The crystal structure of kasolite, Pb[(UO2)(SiO4)](H2O), Z=4, monoclinic, with a=6.7050(3), b=6.9257(2), c=13.2857(5)A, b=105.064(4)°, V=595.74(3) A3, the space group P21/c, has been solved by charge-flipping method and refined by the full-matrix least-squares techniques to an agreement factor(Robs) of 2.2% for 1243 unique observed reflections. The crystal structure of kasolite contains 1 unique U6+ position that is part of a nearly linear uranyl ion (UO2)2+, coordinated in the equatorial plane by fiveO ligands, forming pentagonal bipyramid. The uranyl pentagonal bipyramid s share edges to form chains parallel to [010]. The additional edge of uranyl polyhedra is shared by silicate tetrahedra to form sheets parallel to (100). There is one unique position of Pb2+ in the interlayer. O ligands and 1 (H2O) non-transformer group coordinate Pb2+ exhibiting [2 + 6] coordination.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Nuclear Materials

ISSN

0022-3115

e-ISSN

—

Svazek periodika

434

Číslo periodika v rámci svazku

1-3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

461-467

Kód UT WoS článku

000315752000059

EID výsledku v databázi Scopus

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