- Titel
- Rare-Earth Hydroxometalates Ba[RE(OH)5] with RE = Tb, Dy, Ho
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-897753
- Quellenangabe
- Zeitschrift für anorganische und allgemeine Chemie
Erscheinungsjahr: 2022
Jahrgang: 648
Heft: 24
E-ISSN: 1521-3749
Artikelnummer: e202200314 - Erstveröffentlichung
- 2022
- Abstract (EN)
- Colorless crystals of the new hydroxometalates Ba[RE(OH)5] with the rare-earth elements RE=Tb, Dy, Ho were synthesized under ultra-alkaline conditions in a KOH hydroflux at 200 °C. Single-crystal X-ray diffraction revealed that the three compounds crystallize isostructural in the monoclinic space group P21/n (no. 14). In the crystal structure, the rare-earth cations are coordinated by the oxygen atoms of seven hydroxide anions, which define a distorted pentagonal bipyramid. These polyhedra share edges of their basal ring forming infinite chains that run parallel to the [010] direction. Hydrogen bonds connect the chains into layers parallel to the (101) plane. The Ba2+ cations are located between these layers and surrounded by nine oxygen atoms. Ba[Dy(OH)5] is paramagnetic and shows no luminescence under UV light. When heated in synthetic air or argon, water is released in well-defined steps. Ba[Dy(OH)5] decomposes via DyOOH to Dy2O3, which then reacts with the remaining Ba(OH)2 to form BaDy2O4. Thus, the hydroxometalates can be used as carbon-free precursors for oxides.
- Andere Ausgabe
- Link zum Artikel der zuerst in der Zeitschrift „Zeitschrift für anorganische und allgemeine Chemie” bei Wiley erschienen ist.
DOI: 10.1002/zaac.202200314 - Freie Schlagwörter (DE)
- Kristallstruktur, Hydrofluxsynthese, Hydroxometallate, Vorstufen, Seltenerdverbindungen
- Freie Schlagwörter (EN)
- crystal structure, hydroflux synthesis, hydroxometalates, precursors, rare earth compounds
- Klassifikation (DDC)
- 540
- Verlag
- Wiley-VCH, Weinheim
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft (DFG)
Hydroflux Synthesen — Reaktionen in ultrabasischen Medien bei moderaten Temperaturen
ID: 438795198 - China Scholarship Council (CSC)
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-897753
- Veröffentlichungsdatum Qucosa
- 27.02.2024
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY 4.0