LiCo2As3O10: une nouvelle structure à tunnels interconnectés
Identifieur interne : 000219 ( Main/Exploration ); précédent : 000218; suivant : 000220LiCo2As3O10: une nouvelle structure à tunnels interconnectés
Auteurs : Youssef Ben Smida [Tunisie] ; Abderrahmen Guesmi [Tunisie] ; Ahmed Driss [Tunisie]Source :
- Acta Crystallographica Section E: Structure Reports Online [ 1600-5368 ] ; 2013.
Abstract
The title compound, lithium dicobalt(II) triarsenate, LiCo2As3O10, was synthesized by a solid-state reaction. The As atoms and four out of seven O atoms lie on special positions, all with site symmetry
Url:
DOI: 10.1107/S1600536813013548
PubMed: 23794970
PubMed Central: 3684868
Affiliations:
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El Manar</orgName></affiliation><affiliation wicri:level="1"><nlm:aff id="b">Institut Préparatoire aux Etudes d’Ingénieurs d’El Manar, BP 244 El Manar II, 2092 Tunis,<country>Tunisia</country></nlm:aff><country xml:lang="fr">Tunisie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea><placeName><settlement type="city">Tunis</settlement><region type="region" nuts="2">Gouvernorat de Tunis</region></placeName><orgName type="university" n="3">Université de Tunis - El Manar</orgName></affiliation></author><author><name sortKey="Driss, Ahmed" sort="Driss, Ahmed" uniqKey="Driss A" first="Ahmed" last="Driss">Ahmed Driss</name><affiliation wicri:level="1"><nlm:aff id="a">Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences, El Manar II, 2092 Tunis,<country>Tunisia</country></nlm:aff><country xml:lang="fr">Tunisie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Acta Crystallographica Section E: Structure Reports Online</title><idno type="eISSN">1600-5368</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The title compound, lithium dicobalt(II) triarsenate, LiCo<sub>2</sub>As<sub>3</sub>O<sub>10</sub>, was synthesized by a solid-state reaction. The As atoms and four out of seven O atoms lie on special positions, all with site symmetry <italic>m</italic>. The Li atoms are disordered over two independent special (site symmetry -1) and general positions with occupancies of 0.54 (7) and 0.23 (4), respectively. The structure model is supported by bond-valence-sum (BVS) and charge-distribution (CHARDI) methods. The structure can be described as a three-dimensional framework constructed from bi-octahedral Co<sub>2</sub>O<sub>10</sub> dimers edge-connected to As<sub>3</sub>O<sub>10</sub> groups. It delimits two sets of tunnels, running parallel to the <italic>a</italic> and <italic>b</italic> axes, the latter being the larger. The Li<sup>+</sup> ions are located within the intersections of the tunnels. The possible motion of the alkali cations has been investigated by means of the BVS model. This simulation shows that the Li<sup>+</sup> motion appears to be easier mainly along the <italic>b</italic>-axis direction and that this material may possess interesting conduction properties.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Tunisie</li></country><region><li>Gouvernorat de Tunis</li></region><settlement><li>Tunis</li></settlement><orgName><li>Université de Tunis - El Manar</li></orgName></list><tree><country name="Tunisie"><noRegion><name sortKey="Ben Smida, Youssef" sort="Ben Smida, Youssef" uniqKey="Ben Smida Y" first="Youssef" last="Ben Smida">Youssef Ben Smida</name></noRegion><name sortKey="Driss, Ahmed" sort="Driss, Ahmed" uniqKey="Driss A" first="Ahmed" last="Driss">Ahmed Driss</name><name sortKey="Guesmi, Abderrahmen" sort="Guesmi, Abderrahmen" uniqKey="Guesmi A" first="Abderrahmen" last="Guesmi">Abderrahmen Guesmi</name><name sortKey="Guesmi, Abderrahmen" sort="Guesmi, Abderrahmen" uniqKey="Guesmi A" first="Abderrahmen" last="Guesmi">Abderrahmen Guesmi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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