The stannides RE2Ni2Sn (RE = Pr, Ho, Er, Tm) - Structural transition from the W2B2Co to Mo2B2Fe type as a function of the rare earth size
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | HEYING, Birgit | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | RODEWALD, Ute Ch. | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHEVALIER, Bernard | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0932-0776 | |
| dc.description.abstractEn | The stannides RE2Ni2Sn (RE = Pr, Ho, Er, Tm) were synthesized by arc-melting of the elements and characterized by powder X-ray diffraction. Pr2Ni2Sn crystallizes with the orthorhombic W2B2Co-type structure, Immm, a = 443.8(1), b = 572.1(1), c = 855.1(2) pm, wR2 = 0.0693, 293 F2 values, 13 variables. A structural transition to the tetragonal Mo2B2Fe type occurs for the heavier rare earth elements. The structures of Ho2Ni2Sn (a = 729.26(9), c = 366.66(7) pm, wR2 = 0.0504, 250 F2 values, 12 variables), Er2Ni2Sn (a = 727.2(2), c = 364.3(1) pm, wR2 = 0.0397, 262 F2 values, 12 variables), and Tm2Ni2Sn (a = 725.2(1), c = 362.8(1) pm, wR2 = 0.0545, 258 F2 values, 12 variables) were refined from single-crystal diffractometer data. The switch in structure type is driven by the size of the rare earth element. The [Ni2Sn] substructures are composed of Ni2Sn2 squares and Ni4Sn2 hexagons in Pr2Ni2Sn, and of Ni3Sn2 pentagons in Er2Ni2Sn. The Ni4Sn2 hexagons and Ni3Sn2 pentagons exhibit Ni2 pairs with Ni-Ni distances of 247 pm in Pr2Ni2Sn, and of 250 pm in Er2Ni2Sn. | |
| dc.language.iso | en | |
| dc.publisher | Verlag der Zeitschrift Fuer Naturforschung | |
| dc.subject | Stannides | |
| dc.subject | Crystal Structure | |
| dc.subject | Lanthanoid contraction | |
| dc.title.en | The stannides RE2Ni2Sn (RE = Pr, Ho, Er, Tm) - Structural transition from the W2B2Co to Mo2B2Fe type as a function of the rare earth size | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.5560/ZNB.2013-2296 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Zeitschrift fur Naturforschung B | |
| bordeaux.page | 10-16 | |
| bordeaux.volume | 68 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00776959 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00776959v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Zeitschrift%20fur%20Naturforschung%20B&rft.date=2013&rft.volume=68&rft.issue=1&rft.spage=10-16&rft.epage=10-16&rft.eissn=0932-0776&rft.issn=0932-0776&rft.au=HEYING,%20Birgit&RODEWALD,%20Ute%20Ch.&P%C3%96TTGEN,%20Rainer&CHEVALIER,%20Bernard&rft.genre=article |
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