The alluaudite-type crystal structures of Na2(Fe/Co)2Co(VO4)3 and Ag2(Fe/Co)2Co(VO4)3.
Identifieur interne : 000002 ( PubMed/Corpus ); précédent : 000001; suivant : 000003The alluaudite-type crystal structures of Na2(Fe/Co)2Co(VO4)3 and Ag2(Fe/Co)2Co(VO4)3.
Auteurs : Mohammed Hadouchi ; Abderrazzak Assani ; Mohamed Saadi ; Lahcen El AmmariSource :
- Acta crystallographica. Section E, Crystallographic communications ; 2016.
Abstract
Single crystals of the title compounds, disodium di(cobalt/iron) cobalt tris-(orthovanadate), Na2(Fe/Co)2Co(VO4)3, and disilver di(cobalt/iron) cobalt tris-(orthovanadate), Ag2(Fe/Co)2Co(VO4)3, were grown from a melt consisting of stoichiometric mixtures of three metallic cation precursors and vanadium pentoxide. The difficulty to distinguish between cobalt and iron by using X-ray diffraction alone forced us to explore several models, assuming an oxidation state of +II for Co and +III for Fe and a partial cationic disorder in the Wyckoff site 8f containing a mixture of Co and Fe with a statistical distribution for the Na compound and an occupancy ratio of 0.4875:0.5125 (Co:Fe) for the Ag compound. The alluaudite-type structure is made up from [10-1] chains of [(Co,Fe)2O10] double octa-hedra linked by highly distorted [CoO6] octa-hedra via a common edge. The chains are linked through VO4 tetra-hedra, forming polyhedral sheets perpendicular to [010]. The stacking of the sheets defines two types of channels parallel to [001] where the Na(+) cations (both with full occupancy) or Ag(+) cations (one with occupancy 0.97) are located.
DOI: 10.1107/S2056989016009981
PubMed: 27555954
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Section E, Crystallographic communications</title><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Single crystals of the title compounds, disodium di(cobalt/iron) cobalt tris-(orthovanadate), Na2(Fe/Co)2Co(VO4)3, and disilver di(cobalt/iron) cobalt tris-(orthovanadate), Ag2(Fe/Co)2Co(VO4)3, were grown from a melt consisting of stoichiometric mixtures of three metallic cation precursors and vanadium pentoxide. The difficulty to distinguish between cobalt and iron by using X-ray diffraction alone forced us to explore several models, assuming an oxidation state of +II for Co and +III for Fe and a partial cationic disorder in the Wyckoff site 8f containing a mixture of Co and Fe with a statistical distribution for the Na compound and an occupancy ratio of 0.4875:0.5125 (Co:Fe) for the Ag compound. The alluaudite-type structure is made up from [10-1] chains of [(Co,Fe)2O10] double octa-hedra linked by highly distorted [CoO6] octa-hedra via a common edge. The chains are linked through VO4 tetra-hedra, forming polyhedral sheets perpendicular to [010]. The stacking of the sheets defines two types of channels parallel to [001] where the Na(+) cations (both with full occupancy) or Ag(+) cations (one with occupancy 0.97) are located.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">27555954</PMID><DateCreated><Year>2016</Year><Month>8</Month><Day>24</Day></DateCreated><DateCompleted><Year>2016</Year><Month>08</Month><Day>24</Day></DateCompleted><DateRevised><Year>2016</Year><Month>8</Month><Day>26</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><JournalIssue CitedMedium="Print"><Volume>72</Volume><Issue>Pt 7</Issue><PubDate><Year>2016</Year><Month>Jul</Month><Day>1</Day></PubDate></JournalIssue><Title>Acta crystallographica. Section E, Crystallographic communications</Title><ISOAbbreviation>Acta Crystallogr E Crystallogr Commun</ISOAbbreviation></Journal><ArticleTitle>The alluaudite-type crystal structures of Na2(Fe/Co)2Co(VO4)3 and Ag2(Fe/Co)2Co(VO4)3.</ArticleTitle><Pagination><MedlinePgn>1017-20</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1107/S2056989016009981</ELocationID><Abstract><AbstractText>Single crystals of the title compounds, disodium di(cobalt/iron) cobalt tris-(orthovanadate), Na2(Fe/Co)2Co(VO4)3, and disilver di(cobalt/iron) cobalt tris-(orthovanadate), Ag2(Fe/Co)2Co(VO4)3, were grown from a melt consisting of stoichiometric mixtures of three metallic cation precursors and vanadium pentoxide. The difficulty to distinguish between cobalt and iron by using X-ray diffraction alone forced us to explore several models, assuming an oxidation state of +II for Co and +III for Fe and a partial cationic disorder in the Wyckoff site 8f containing a mixture of Co and Fe with a statistical distribution for the Na compound and an occupancy ratio of 0.4875:0.5125 (Co:Fe) for the Ag compound. The alluaudite-type structure is made up from [10-1] chains of [(Co,Fe)2O10] double octa-hedra linked by highly distorted [CoO6] octa-hedra via a common edge. The chains are linked through VO4 tetra-hedra, forming polyhedral sheets perpendicular to [010]. The stacking of the sheets defines two types of channels parallel to [001] where the Na(+) cations (both with full occupancy) or Ag(+) cations (one with occupancy 0.97) are located.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hadouchi</LastName><ForeName>Mohammed</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Laboratoire de Chimie du Solide Appliquée, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Assani</LastName><ForeName>Abderrazzak</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Laboratoire de Chimie du Solide Appliquée, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Saadi</LastName><ForeName>Mohamed</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Laboratoire de Chimie du Solide Appliquée, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>El Ammari</LastName><ForeName>Lahcen</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Laboratoire de Chimie du Solide Appliquée, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.</Affiliation></AffiliationInfo></Author></AuthorList><Language>ENG</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>Jun</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Acta Crystallogr E Crystallogr Commun</MedlineTA><NlmUniqueID>101648987</NlmUniqueID></MedlineJournalInfo><OtherID Source="NLM">PMC4992929</OtherID><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">alluaudite-like structure</Keyword><Keyword MajorTopicYN="N">crystal structure</Keyword><Keyword MajorTopicYN="N">solid-state reaction synthesis</Keyword><Keyword MajorTopicYN="N">transition metal vanadates</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>5</Month><Day>07</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>6</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>8</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>8</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2016</Year><Month>8</Month><Day>25</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">27555954</ArticleId><ArticleId IdType="doi">10.1107/S2056989016009981</ArticleId><ArticleId IdType="pii">wm5292</ArticleId><ArticleId IdType="pmc">PMC4992929</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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