Rare-Earth Hydroxometalates Ba[RE(OH)5] with RE=Tb, Dy, Ho
Li Y, Albrecht R, Ruck M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 648
Article Number: e202200314
Journal Issue: 24
DOI: 10.1002/zaac.202200314
Abstract
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.
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How to cite
APA:
Li, Y., Albrecht, R., & Ruck, M. (2022). Rare-Earth Hydroxometalates Ba[RE(OH)5] with RE=Tb, Dy, Ho. Zeitschrift für Anorganische und Allgemeine Chemie, 648(24). https://dx.doi.org/10.1002/zaac.202200314
MLA:
Li, Yuxi, Ralf Albrecht, and Michael Ruck. "Rare-Earth Hydroxometalates Ba[RE(OH)5] with RE=Tb, Dy, Ho." Zeitschrift für Anorganische und Allgemeine Chemie 648.24 (2022).
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