Linear infinite cadmium chains in CaAu4Cd2 and other intermetallics with YbMo2Al4-type structure
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | TAPPE, Frank | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MATAR, Samir F. | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | SCHWICKERT, Christian | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | WINTER, Florian | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | GERKE, Birgit | |
| hal.structure.identifier | Institut für Anorganische und Analytische Chemie | |
| dc.contributor.author | PÖTTGEN, Rainer | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0026-9247 | |
| dc.description.abstractEn | New YbMo2Al4-type cadmium compounds CaAu4Cd2, SrAu4Cd2, and EuAu4Cd2 were synthesized from the elements in sealed tantalum tubes. The structures of CaAu4Cd2 (I4/mmm, a = 710.7(1), c = 550.2(3) pm, wR2 = 0.026, 168 F 2 values, 10 variables) and EuAu4.80Cd1.20 (a = 716.6(1), c = 545.9(1) pm, wR2 = 0.024, 167 F 2 values, 11 variables) were refined from X-ray single-crystal diffractometry data. The gold and cadmium atoms show different substructures: Au4 squares (279 pm Au-Au in CaAu4Cd2) and cadmium chains (275 pm Cd-Cd in CaAu4Cd2). EuAu4Cd2 forms a solid solution EuAu4+x Cd2−x up to x ≈ 1, where almost every other cadmium atom within the chains is substituted by gold. Chemical bonding analyses on CaAu4Cd2 shows almost complete charge transfer from calcium to the [Au4Cd2] network. Bader charge analysis classifies CaAu4Cd2 as an auride. EuAu4Cd2 shows Curie-Weiss behavior above 25 K with an experimental magnetic moment of 7.86 μB/Eu atom, near to the free ion value of 7.94 μB for Eu2+ and orders ferromagnetically at T C = 16.3(5) K. 151Eu Mössbauer spectra show a single signal at an isomer shift of about −10 mm/s, compatible with divalent europium. At 5 K, and therefore clearly below T C, magnetic hyperfine splitting is observed. | |
| dc.language.iso | en | |
| dc.publisher | Springer Verlag | |
| dc.subject.en | Intermetallic compounds | |
| dc.subject.en | Cadmium | |
| dc.subject.en | Crystal chemistry | |
| dc.title.en | Linear infinite cadmium chains in CaAu4Cd2 and other intermetallics with YbMo2Al4-type structure | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1007/s00706-013-0932-8 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Chemical Monthly = Monatshefte für Chemie | |
| bordeaux.page | 751-760 | |
| bordeaux.volume | 144 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00822124 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00822124v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemical%20Monthly%20=%20Monatshefte%20f%C3%BCr%20Chemie&rft.date=2013&rft.volume=144&rft.issue=6&rft.spage=751-760&rft.epage=751-760&rft.eissn=0026-9247&rft.issn=0026-9247&rft.au=TAPPE,%20Frank&MATAR,%20Samir%20F.&SCHWICKERT,%20Christian&WINTER,%20Florian&GERKE,%20Birgit&rft.genre=article |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||