Mostrar el registro sencillo del ítem

Rare Earth-rich Magnesium Compounds RE4RhMg (1{RE} = Y, La - Nd, Sm, Gd - Tm, Lu)

hal.structure.identifierInstitut für Anorganische und Analytische Chemie
dc.contributor.authorTUNCEL, Selcan
hal.structure.identifierInstitut für Anorganische und Analytische Chemie
dc.contributor.authorRODEWALD, Ute Ch.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHEVALIER, Bernard
hal.structure.identifierInstitut für Anorganische und Analytische Chemie
dc.contributor.authorPÖTTGEN, Rainer
dc.date.issued2007
dc.identifier.issn0932-0776
dc.description.abstractEnThe series of magnesium compounds RE4 RhMg (RE = Y, La–Nd, Sm, Gd–Tm, Lu) was prepared by high-frequency melting of the elements in sealed tantalum tubes. All samples were investigated by powder X-ray diffraction. The structures with RE = Sm, Gd, Dy, Ho, and Er as rare earth metal components were refined from single crystal diffractometer data: Gd4 RhIn-type, F ¯43m, Z = 16, a = 1392.1(1) pm, wR2 = 0.060, 616 F2 values, 19 variables for Sm 4 RhMg, a = 1380.8(2) pm, wR2 = 0.071, 530 F2 values, 19 variables for Gd4 RhMg, a = 1366.9(1) pm, wR2 = 0.070, 594 F2 values, 20 variables for Dy4 RhMg, a = 1355.7(2) pm, wR2 = 0.077, 578 F2 values, 20 variables for Ho3.52 RhMg1.48 , and a = 1355.4(2) pm, wR2 = 0.075, 559 F2 values, 20 variables for Er 3.94 RhMg1.06 . The rhodium atoms have slightly distorted trigonal prismatic rare earth coordination. Condensation of the RhRE6 prisms leads to a three-dimensional network which leaves large voids that are filled by regular Mg4 tetrahedra with a Mg–Mg distance of 312 pm in Sm4 RhMg.The magnesium atoms have twelve nearest neighbors (3 Mg + 9 RE) in icosahedral coordination. In the structures with holmium and erbium, the RE1 positions which are not involved in the trigonal prismatic network exhibit RE1/Mg mixing. Shortest distances occur for Sm–Rh (286 pm) within the rigid three-dimensional network of condensed trigonal prisms
dc.language.isoen
dc.publisherVerlag der Zeitschrift Fuer Naturforschung
dc.subject.enMagnesium
dc.subject.enIntermetallics
dc.subject.enCrystal Chemistry
dc.title.enRare Earth-rich Magnesium Compounds RE4RhMg (1{RE} = Y, La - Nd, Sm, Gd - Tm, Lu)
dc.typeArticle de revue
dc.identifier.doi10.1515/znb-2007-0503
dc.subject.halChimie/Matériaux
bordeaux.journalZeitschrift fur Naturforschung B
bordeaux.page642-646
bordeaux.volume62
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-00142632
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00142632v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Zeitschrift%20fur%20Naturforschung%20B&rft.date=2007&rft.volume=62&rft.issue=5&rft.spage=642-646&rft.epage=642-646&rft.eissn=0932-0776&rft.issn=0932-0776&rft.au=TUNCEL,%20Selcan&RODEWALD,%20Ute%20Ch.&CHEVALIER,%20Bernard&P%C3%96TTGEN,%20Rainer&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem