Structure cristalline du composé intermétallique Ni18Ge12.
Identifieur interne : 000029 ( PubMed/Checkpoint ); précédent : 000028; suivant : 000030Structure cristalline du composé intermétallique Ni18Ge12.
Auteurs : Mohammed Kars [Algérie] ; Adrian G Mez Herrero [Espagne] ; Thierry Roisnel [France] ; Allaoua Rebbah [Algérie] ; L Carlos Otero-Diáz [Espagne]Source :
- Acta crystallographica. Section E, Crystallographic communications ; 2015.
Abstract
Single crystals of octa-deca-nickel dodeca-germanide were grown by chemical transport reaction. The inter-metallic compound crystallizes in a superstructure of the hexa-gonal NiAs type (B8 type). All atoms in the asymmetric unit lie on special positions except one Ni atom (two Ni atoms have site symmetry -6.. and another one has site symmetry .2. while the Ge atoms have site symmetries 32., m.. and 3..). In the structure, the Ni atoms are arranged in 11- or 13-vertex polyhedra (CN = 11-13). The coordination polyhedra of the Ge atoms are bicapped square anti-prisms (CN = 10) or 11-vertex polyhedra (CN = 11). The structure exhibits strong Ge⋯Ni inter-actions, but no close Ge⋯Ge contacts are observed. The Ni atoms with CN = 13 form infinite chains along [001] with an Ni-Ni distance of 2.491 (2) Å.
DOI: 10.1107/S2056989015003680
PubMed: 25844198
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Químicas, Universidad Complutense, 28040 Madrid, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Departomento Inorgánica, Facultad C.C. Químicas, Universidad Complutense, 28040 Madrid</wicri:regionArea><placeName><region nuts="2" type="communauté">Communauté de Madrid</region></placeName></affiliation></author></analytic><series><title level="j">Acta crystallographica. 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">Single crystals of octa-deca-nickel dodeca-germanide were grown by chemical transport reaction. The inter-metallic compound crystallizes in a superstructure of the hexa-gonal NiAs type (B8 type). All atoms in the asymmetric unit lie on special positions except one Ni atom (two Ni atoms have site symmetry -6.. and another one has site symmetry .2. while the Ge atoms have site symmetries 32., m.. and 3..). In the structure, the Ni atoms are arranged in 11- or 13-vertex polyhedra (CN = 11-13). The coordination polyhedra of the Ge atoms are bicapped square anti-prisms (CN = 10) or 11-vertex polyhedra (CN = 11). The structure exhibits strong Ge⋯Ni inter-actions, but no close Ge⋯Ge contacts are observed. The Ni atoms with CN = 13 form infinite chains along [001] with an Ni-Ni distance of 2.491 (2) Å.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">25844198</PMID><DateCreated><Year>2015</Year><Month>04</Month><Day>06</Day></DateCreated><DateCompleted><Year>2015</Year><Month>04</Month><Day>06</Day></DateCompleted><DateRevised><Year>2015</Year><Month>04</Month><Day>08</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><JournalIssue CitedMedium="Print"><Volume>71</Volume><Issue>Pt 3</Issue><PubDate><Year>2015</Year><Month>Mar</Month><Day>01</Day></PubDate></JournalIssue><Title>Acta crystallographica. Section E, Crystallographic communications</Title><ISOAbbreviation>Acta Crystallogr E Crystallogr Commun</ISOAbbreviation></Journal><ArticleTitle>Structure cristalline du composé intermétallique Ni18Ge12.</ArticleTitle><Pagination><MedlinePgn>318-20</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1107/S2056989015003680</ELocationID><Abstract><AbstractText>Single crystals of octa-deca-nickel dodeca-germanide were grown by chemical transport reaction. The inter-metallic compound crystallizes in a superstructure of the hexa-gonal NiAs type (B8 type). All atoms in the asymmetric unit lie on special positions except one Ni atom (two Ni atoms have site symmetry -6.. and another one has site symmetry .2. while the Ge atoms have site symmetries 32., m.. and 3..). In the structure, the Ni atoms are arranged in 11- or 13-vertex polyhedra (CN = 11-13). The coordination polyhedra of the Ge atoms are bicapped square anti-prisms (CN = 10) or 11-vertex polyhedra (CN = 11). The structure exhibits strong Ge⋯Ni inter-actions, but no close Ge⋯Ge contacts are observed. The Ni atoms with CN = 13 form infinite chains along [001] with an Ni-Ni distance of 2.491 (2) Å.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kars</LastName><ForeName>Mohammed</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Université Houari-Boumedienne, Faculté de Chimie, Laboratoire Sciences des matériaux, BP 32 El-Alia 16111 Bab-Ezzouar, Algérie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Herrero</LastName><ForeName>Adrian Gómez</ForeName><Initials>AG</Initials><AffiliationInfo><Affiliation>Centro de Microscopia Electrónica, Universidad Complutense, 28040 Madrid, Spain.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Roisnel</LastName><ForeName>Thierry</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Centre de Diffractométrie X, Sciences Chimiques de Rennes, UMR 6226 CNRS Université de Rennes 1, Campus de Beaulieu, Avenue du Général Leclerc, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rebbah</LastName><ForeName>Allaoua</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Université Houari-Boumedienne, Faculté de Chimie, Laboratoire Sciences des matériaux, BP 32 El-Alia 16111 Bab-Ezzouar, Algérie.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Otero-Diáz</LastName><ForeName>L Carlos</ForeName><Initials>LC</Initials><AffiliationInfo><Affiliation>Departomento Inorgánica, Facultad C.C. Químicas, Universidad Complutense, 28040 Madrid, Spain.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>02</Month><Day>28</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Acta Crystallogr E Crystallogr Commun</MedlineTA><NlmUniqueID>101648987</NlmUniqueID></MedlineJournalInfo><OtherID Source="NLM">PMC4350741</OtherID><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">B8-type substructure</Keyword><Keyword MajorTopicYN="N">Ge⋯Ni interactions</Keyword><Keyword MajorTopicYN="N">crystal structure</Keyword><Keyword MajorTopicYN="N">intermetallic compound</Keyword><Keyword MajorTopicYN="N">nickel germanide</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year><Month>02</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2015</Year><Month>02</Month><Day>22</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>4</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2015</Year><Month>4</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>4</Month><Day>7</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25844198</ArticleId><ArticleId IdType="doi">10.1107/S2056989015003680</ArticleId><ArticleId IdType="pii">ru2062</ArticleId><ArticleId IdType="pmc">PMC4350741</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Algérie</li><li>Espagne</li><li>France</li></country><region><li>Communauté de Madrid</li><li>Région Bretagne</li></region><settlement><li>Rennes</li></settlement><orgName><li>Université de Rennes 1</li></orgName></list><tree><country name="Algérie"><noRegion><name sortKey="Kars, Mohammed" sort="Kars, Mohammed" uniqKey="Kars M" first="Mohammed" last="Kars">Mohammed Kars</name></noRegion><name sortKey="Rebbah, Allaoua" sort="Rebbah, Allaoua" uniqKey="Rebbah A" first="Allaoua" last="Rebbah">Allaoua Rebbah</name></country><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Herrero, Adrian G Mez" sort="Herrero, Adrian G Mez" uniqKey="Herrero A" first="Adrian G Mez" last="Herrero">Adrian G Mez Herrero</name></region><name sortKey="Otero Diaz, L Carlos" sort="Otero Diaz, L Carlos" uniqKey="Otero Diaz L" first="L Carlos" last="Otero-Diáz">L Carlos Otero-Diáz</name></country><country name="France"><region name="Région Bretagne"><name sortKey="Roisnel, Thierry" sort="Roisnel, Thierry" uniqKey="Roisnel T" first="Thierry" last="Roisnel">Thierry Roisnel</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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