Thortveitite-type Tm2Si2O7
Identifieur interne : 000101 ( Pmc/Checkpoint ); précédent : 000100; suivant : 000102Thortveitite-type Tm2Si2O7
Auteurs : Volker Kahlenberg [Autriche] ; Paul Aichholzer [Autriche]Source :
- Acta Crystallographica Section E: Structure Reports Online [ 1600-5368 ] ; 2014.
Abstract
Single crystals of dithulium disilicate, Tm2Si2O7, were obtained in flux synthesis experiments in the system SiO2–Tm2O3–LiF at ambient pressure. The compound belongs to the group of sorosilicates,
Url:
DOI: 10.1107/S1600536814013142
PubMed: 25161507
PubMed Central: 4120532
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Thortveitite-type Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
</title>
<author><name sortKey="Kahlenberg, Volker" sort="Kahlenberg, Volker" uniqKey="Kahlenberg V" first="Volker" last="Kahlenberg">Volker Kahlenberg</name>
<affiliation wicri:level="1"><nlm:aff id="a">University of Innsbruck, Institute of Mineralogy & Petrography, Innrain 52, A-6020 Innsbruck,<country>Austria</country>
</nlm:aff>
<country xml:lang="fr">Autriche</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Aichholzer, Paul" sort="Aichholzer, Paul" uniqKey="Aichholzer P" first="Paul" last="Aichholzer">Paul Aichholzer</name>
<affiliation wicri:level="1"><nlm:aff id="a">University of Innsbruck, Institute of Mineralogy & Petrography, Innrain 52, A-6020 Innsbruck,<country>Austria</country>
</nlm:aff>
<country xml:lang="fr">Autriche</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
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<idno type="pmid">25161507</idno>
<idno type="pmc">4120532</idno>
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<idno type="doi">10.1107/S1600536814013142</idno>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Thortveitite-type Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
</title>
<author><name sortKey="Kahlenberg, Volker" sort="Kahlenberg, Volker" uniqKey="Kahlenberg V" first="Volker" last="Kahlenberg">Volker Kahlenberg</name>
<affiliation wicri:level="1"><nlm:aff id="a">University of Innsbruck, Institute of Mineralogy & Petrography, Innrain 52, A-6020 Innsbruck,<country>Austria</country>
</nlm:aff>
<country xml:lang="fr">Autriche</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Aichholzer, Paul" sort="Aichholzer, Paul" uniqKey="Aichholzer P" first="Paul" last="Aichholzer">Paul Aichholzer</name>
<affiliation wicri:level="1"><nlm:aff id="a">University of Innsbruck, Institute of Mineralogy & Petrography, Innrain 52, A-6020 Innsbruck,<country>Austria</country>
</nlm:aff>
<country xml:lang="fr">Autriche</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="2014">2014</date>
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<front><div type="abstract" xml:lang="en"><p>Single crystals of dithulium disilicate, Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
, were obtained in flux synthesis experiments in the system SiO<sub>2</sub>
–Tm<sub>2</sub>
O<sub>3</sub>
–LiF at ambient pressure. The compound belongs to the group of sorosilicates, <italic>i.e.</italic>
it is based on [Si<sub>2</sub>
O<sub>7</sub>
]-units and crystallizes in the thortveitite (Sc<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
) structure type. The Tm<sup>3+</sup>
cation (site symmetry .2.) occupies a distorted octahedral site, with Tm—O bond lengths in the range 2.217 (4)–2.289 (4) Å. Each of the octahedra shares three of its edges with adjacent [TmO<sub>6</sub>
] groups, resulting in the formation of layers parallel to (001). The individual [SiO<sub>4</sub>
] tetrahedra are more regular, <italic>i.e.</italic>
the differences between the bond lengths between Si and the bridging and non-bridging O atoms are not very pronounced. The layers containing the octahedra and the sheets containing the [Si<sub>2</sub>
O<sub>7</sub>
] groups (point group symmetry 2/<italic>m</italic>
) form an alternating sequence. Linkage is provided by sharing common oxygen vertices.</p>
</div>
</front>
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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>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">25161507</article-id>
<article-id pub-id-type="pmc">4120532</article-id>
<article-id pub-id-type="publisher-id">wm5029</article-id>
<article-id pub-id-type="doi">10.1107/S1600536814013142</article-id>
<article-id pub-id-type="coden">ACSEBH</article-id>
<article-id pub-id-type="pii">S1600536814013142</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Inorganic Papers</subject>
</subj-group>
</article-categories>
<title-group><article-title>Thortveitite-type Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
</article-title>
<alt-title><italic>Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
</italic>
</alt-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Kahlenberg</surname>
<given-names>Volker</given-names>
</name>
<xref ref-type="aff" rid="a">a</xref>
<xref ref-type="corresp" rid="cor">*</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Aichholzer</surname>
<given-names>Paul</given-names>
</name>
<xref ref-type="aff" rid="a">a</xref>
</contrib>
<aff id="a"><label>a</label>
University of Innsbruck, Institute of Mineralogy & Petrography, Innrain 52, A-6020 Innsbruck,<country>Austria</country>
</aff>
</contrib-group>
<author-notes><corresp id="cor">Correspondence e-mail: <email>volker.kahlenberg@uibk.ac.at</email>
</corresp>
</author-notes>
<pub-date pub-type="collection"><day>01</day>
<month>7</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub"><day>11</day>
<month>6</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>11</day>
<month>6</month>
<year>2014</year>
</pub-date>
<pmc-comment> PMC Release delay is 0 months and 0 days and was based on the
. </pmc-comment>
<volume>70</volume>
<issue>Pt 7</issue>
<issue-id pub-id-type="publisher-id">e140700</issue-id>
<fpage>i34</fpage>
<lpage>i35</lpage>
<history><date date-type="received"><day>24</day>
<month>5</month>
<year>2014</year>
</date>
<date date-type="accepted"><day>05</day>
<month>6</month>
<year>2014</year>
</date>
</history>
<permissions><copyright-statement>© Kahlenberg and Aichholzer 2014</copyright-statement>
<copyright-year>2014</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/S1600536814013142">A full version of this article is available from Crystallography Journals Online.</self-uri>
<abstract><p>Single crystals of dithulium disilicate, Tm<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
, were obtained in flux synthesis experiments in the system SiO<sub>2</sub>
–Tm<sub>2</sub>
O<sub>3</sub>
–LiF at ambient pressure. The compound belongs to the group of sorosilicates, <italic>i.e.</italic>
it is based on [Si<sub>2</sub>
O<sub>7</sub>
]-units and crystallizes in the thortveitite (Sc<sub>2</sub>
Si<sub>2</sub>
O<sub>7</sub>
) structure type. The Tm<sup>3+</sup>
cation (site symmetry .2.) occupies a distorted octahedral site, with Tm—O bond lengths in the range 2.217 (4)–2.289 (4) Å. Each of the octahedra shares three of its edges with adjacent [TmO<sub>6</sub>
] groups, resulting in the formation of layers parallel to (001). The individual [SiO<sub>4</sub>
] tetrahedra are more regular, <italic>i.e.</italic>
the differences between the bond lengths between Si and the bridging and non-bridging O atoms are not very pronounced. The layers containing the octahedra and the sheets containing the [Si<sub>2</sub>
O<sub>7</sub>
] groups (point group symmetry 2/<italic>m</italic>
) form an alternating sequence. Linkage is provided by sharing common oxygen vertices.</p>
</abstract>
</article-meta>
</front>
</pmc>
<affiliations><list><country><li>Autriche</li>
</country>
</list>
<tree><country name="Autriche"><noRegion><name sortKey="Kahlenberg, Volker" sort="Kahlenberg, Volker" uniqKey="Kahlenberg V" first="Volker" last="Kahlenberg">Volker Kahlenberg</name>
</noRegion>
<name sortKey="Aichholzer, Paul" sort="Aichholzer, Paul" uniqKey="Aichholzer P" first="Paul" last="Aichholzer">Paul Aichholzer</name>
</country>
</tree>
</affiliations>
</record>
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