CobaltMaghrebV1, Pmc, Checkpoint, bibRecord, 000187

LiCo2As3O10: une nouvelle structure à tunnels interconnectés

Identifieur interne : 000187 ( Pmc/Checkpoint ); précédent : 000186; suivant : 000188

LiCo2As3O10: 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.

RBID : PMC:3684868

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 m. 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 Co₂O₁₀ dimers edge-connected to As₃O₁₀ groups. It delimits two sets of tunnels, running parallel to the a and b axes, the latter being the larger. The Li⁺ 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⁺ motion appears to be easier mainly along the b-axis direction and that this material may possess interesting conduction properties.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3684868

DOI: 10.1107/S1600536813013548
PubMed: 23794970
PubMed Central: 3684868

Affiliations:

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Le document en format XML

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As<sub>3</sub>
O<sub>10</sub>
: une nouvelle structure à tunnels interconnectés</title>
<author><name sortKey="Ben Smida, Youssef" sort="Ben Smida, Youssef" uniqKey="Ben Smida Y" first="Youssef" last="Ben Smida">Youssef Ben Smida</name>
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As<sub>3</sub>
O<sub>10</sub>
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<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>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
  <front><journal-meta><journal-id journal-id-type="nlm-ta">Acta Crystallogr Sect E Struct Rep Online</journal-id>
<journal-id journal-id-type="iso-abbrev">Acta Crystallogr Sect E Struct Rep Online</journal-id>
<journal-id journal-id-type="publisher-id">Acta Cryst. E</journal-id>
<journal-title-group><journal-title>Acta Crystallographica Section E: Structure Reports Online</journal-title>
</journal-title-group>
<issn pub-type="epub">1600-5368</issn>
<publisher><publisher-name>International Union of Crystallography</publisher-name>
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<article-meta><article-id pub-id-type="pmid">23794970</article-id>
<article-id pub-id-type="pmc">3684868</article-id>
<article-id pub-id-type="publisher-id">br2224</article-id>
<article-id pub-id-type="doi">10.1107/S1600536813013548</article-id>
<article-id pub-id-type="coden">ACSEBH</article-id>
<article-id pub-id-type="pii">S1600536813013548</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Inorganic Papers</subject>
</subj-group>
</article-categories>
<title-group><article-title>LiCo<sub>2</sub>
As<sub>3</sub>
O<sub>10</sub>
: une nouvelle structure à tunnels interconnectés</article-title>
<alt-title><italic>LiCo<sub>2</sub>
As<sub>3</sub>
O<sub>10</sub>
</italic>
</alt-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Ben Smida</surname>
<given-names>Youssef</given-names>
</name>
<xref ref-type="aff" rid="a">a</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Guesmi</surname>
<given-names>Abderrahmen</given-names>
</name>
<xref ref-type="aff" rid="a">a</xref>
<xref ref-type="aff" rid="b">b</xref>
<xref ref-type="corresp" rid="cor">*</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Driss</surname>
<given-names>Ahmed</given-names>
</name>
<xref ref-type="aff" rid="a">a</xref>
</contrib>
<aff id="a"><label>a</label>
Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences, El Manar II, 2092 Tunis,<country>Tunisia</country>
</aff>
<aff id="b"><label>b</label>
Institut Préparatoire aux Etudes d’Ingénieurs d’El Manar, BP 244 El Manar II, 2092 Tunis,<country>Tunisia</country>
</aff>
</contrib-group>
<author-notes><corresp id="cor">Correspondence e-mail: <email>abderrahmen.guesmi@ipeim.rnu.tn</email>
</corresp>
</author-notes>
<pub-date pub-type="collection"><day>01</day>
<month>6</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub"><day>31</day>
<month>5</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>31</day>
<month>5</month>
<year>2013</year>
</pub-date>
<pmc-comment> PMC Release delay is 0 months and 0 days and was based on the 
 							. </pmc-comment>
      <volume>69</volume>
<issue>Pt 6</issue>
<issue-id pub-id-type="publisher-id">e130600</issue-id>
<fpage>i39</fpage>
<lpage>i39</lpage>
<history><date date-type="received"><day>18</day>
<month>3</month>
<year>2013</year>
</date>
<date date-type="accepted"><day>16</day>
<month>5</month>
<year>2013</year>
</date>
</history>
<permissions><copyright-statement>© Ben Smida et al. 2013</copyright-statement>
<copyright-year>2013</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/2.0/uk/"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.</license-p>
</license>
</permissions>
<self-uri xlink:type="simple" xlink:href="http://dx.doi.org/10.1107/S1600536813013548">A full version of this article is available from Crystallography Journals Online.</self-uri>
<abstract><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>
</abstract>
</article-meta>
</front>
</pmc>
<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>
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LiCo2As3O10: une nouvelle structure à tunnels inter­connectés

LiCo2As3O10: une nouvelle structure à tunnels inter­connectés

Source :

Abstract

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Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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Pour générer des pages wiki

LiCo2As3O10: une nouvelle structure à tunnels interconnectés

LiCo2As3O10: une nouvelle structure à tunnels interconnectés