Structure cristalline de type alluaudite K0.4Na3.6Co(MoO4)3.
Identifieur interne : 000015 ( PubMed/Curation ); précédent : 000014; suivant : 000016Structure cristalline de type alluaudite K0.4Na3.6Co(MoO4)3.
Auteurs : Rawia Nasri [Tunisie] ; Noura Fakhar Bourguiba [Tunisie] ; Mohamed Faouzi Zid [Tunisie]Source :
- Acta crystallographica. Section E, Crystallographic communications ; 2015.
Abstract
A new triple molybdate, potassium sodium cobalt tris-(molybdate), K0.4Na3.6Co(MoO4)3, was synthesized using solid-state reactions. The Co(2+) and one Na(+) cation are located at the same general site, each with occupancy 0.5. Another site (site symmetry 2) is occupied by Na(+) and K(+) cations, with occupancies of 0.597 (7) and 0.402 (6), respectively. The other two Na(+) cations and one of the two Mo atoms lie on special positions (site symmetries -1, 2 and 2, respectively). The structure is characterized by M 2O10 (M = Co/Na) dimers, which are linked by MoO4 tetra-hedra, forming infinite layers. The latter are connected firstly by insertion of one type of MoO4 tetra-hedra and secondly by sharing corners with the other type of MoO4 tetra-hedra. This results in an open three-dimensional framework with the cavities occupied by the Na(+) and K(+) cations. The structure is isotypic with Na3In2As3O12 and Na3In2P3O12. A comparison is made with structures such as K2Co2(MoO4)3 and β-NaFe2(MoO4)3 and their differences are discussed.
DOI: 10.1107/S2056989014025894
PubMed: 25705436
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Section E, Crystallographic communications</title><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A new triple molybdate, potassium sodium cobalt tris-(molybdate), K0.4Na3.6Co(MoO4)3, was synthesized using solid-state reactions. The Co(2+) and one Na(+) cation are located at the same general site, each with occupancy 0.5. Another site (site symmetry 2) is occupied by Na(+) and K(+) cations, with occupancies of 0.597 (7) and 0.402 (6), respectively. The other two Na(+) cations and one of the two Mo atoms lie on special positions (site symmetries -1, 2 and 2, respectively). The structure is characterized by M 2O10 (M = Co/Na) dimers, which are linked by MoO4 tetra-hedra, forming infinite layers. The latter are connected firstly by insertion of one type of MoO4 tetra-hedra and secondly by sharing corners with the other type of MoO4 tetra-hedra. This results in an open three-dimensional framework with the cavities occupied by the Na(+) and K(+) cations. The structure is isotypic with Na3In2As3O12 and Na3In2P3O12. A comparison is made with structures such as K2Co2(MoO4)3 and β-NaFe2(MoO4)3 and their differences are discussed.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">25705436</PMID><DateCreated><Year>2015</Year><Month>2</Month><Day>23</Day></DateCreated><DateCompleted><Year>2015</Year><Month>02</Month><Day>23</Day></DateCompleted><DateRevised><Year>2015</Year><Month>2</Month><Day>25</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><JournalIssue CitedMedium="Print"><Volume>71</Volume><Issue>Pt 1</Issue><PubDate><Year>2015</Year><Month>Jan</Month><Day>1</Day></PubDate></JournalIssue><Title>Acta crystallographica. Section E, Crystallographic communications</Title><ISOAbbreviation>Acta Crystallogr E Crystallogr Commun</ISOAbbreviation></Journal><ArticleTitle>Structure cristalline de type alluaudite K0.4Na3.6Co(MoO4)3.</ArticleTitle><Pagination><MedlinePgn>4-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1107/S2056989014025894</ELocationID><Abstract><AbstractText>A new triple molybdate, potassium sodium cobalt tris-(molybdate), K0.4Na3.6Co(MoO4)3, was synthesized using solid-state reactions. The Co(2+) and one Na(+) cation are located at the same general site, each with occupancy 0.5. Another site (site symmetry 2) is occupied by Na(+) and K(+) cations, with occupancies of 0.597 (7) and 0.402 (6), respectively. The other two Na(+) cations and one of the two Mo atoms lie on special positions (site symmetries -1, 2 and 2, respectively). The structure is characterized by M 2O10 (M = Co/Na) dimers, which are linked by MoO4 tetra-hedra, forming infinite layers. The latter are connected firstly by insertion of one type of MoO4 tetra-hedra and secondly by sharing corners with the other type of MoO4 tetra-hedra. This results in an open three-dimensional framework with the cavities occupied by the Na(+) and K(+) cations. The structure is isotypic with Na3In2As3O12 and Na3In2P3O12. A comparison is made with structures such as K2Co2(MoO4)3 and β-NaFe2(MoO4)3 and their differences are discussed.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Nasri</LastName><ForeName>Rawia</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 El Manar Tunis, Tunisie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fakhar Bourguiba</LastName><ForeName>Noura</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 El Manar Tunis, Tunisie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zid</LastName><ForeName>Mohamed Faouzi</ForeName><Initials>MF</Initials><AffiliationInfo><Affiliation>Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 El Manar Tunis, Tunisie.</Affiliation></AffiliationInfo></Author></AuthorList><Language>ENG</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>Jan</Month><Day>01</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Acta Crystallogr E Crystallogr Commun</MedlineTA><NlmUniqueID>101648987</NlmUniqueID></MedlineJournalInfo><OtherID Source="NLM">PMC4331865</OtherID><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">alluaudite-type</Keyword><Keyword MajorTopicYN="N">crystal structure</Keyword><Keyword MajorTopicYN="N">triple molybdate</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>11</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>11</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>2</Month><Day>24</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2015</Year><Month>2</Month><Day>24</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>2</Month><Day>24</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25705436</ArticleId><ArticleId IdType="doi">10.1107/S2056989014025894</ArticleId><ArticleId IdType="pii">br2244</ArticleId><ArticleId IdType="pmc">PMC4331865</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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