Szczegóły publikacji
Opis bibliograficzny
Mullite-type $EMBO_{4}$: synthesis, structural, optical, and vibrational properties of rare tin(II) borates with M = Al and Ga / Sarah Wittmann, Mohammad Mangir Murshed, Vitaliy BILOVOL, Aylin Koldemir, Rainer Pöttgen, Ulla Gro Nielsen, Thorsten Michael Gesing // Journal of the American Ceramic Society ; ISSN 0002-7820. — 2024 — vol. 107 iss.2, s. 1302–1314. — Bibliogr. s. 1313–1314, Abstr. — Publikacja dostępna online od: 2023-09-28. — V. Bilovol - dod. afiliacja: University of Buenos Aires, Buenos Aires, Argentina
Autorzy (7)
- Wittmann Sarah
- Murshed Mohammad Mangir
- AGHBilovol Vitaliy
- Koldemir Aylin
- Pöttgen Rainer
- Nielsen Ulla Gro
- Gesing Thorsten Michael
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 151470 |
|---|---|
| Data dodania do BaDAP | 2024-02-29 |
| Tekst źródłowy | URL |
| DOI | 10.1111/jace.19476 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of the American Ceramic Society |
Abstract
Metal tin-(II)-borates are rarely studied mainly due to the susceptibility of either oxidation into tin(IV) or disproportionation into elemental tin(0) and tin(IV). We report mullite-type SnAlBO4 and SnGaBO4 ceramics produced by conventional solid-state synthesis in sealed quartz tubes at low pressure of 10–7 MPa. Both compounds are isostructural to PbAlBO4 as confirmed by Rietveld refinements of powder X-ray data. The crystal structures are highly influenced by the stereochemical activity of the 5s2 lone electron pair of the Sn2+ cation measured by the Wang–Liebau eccentricity parameter. To further consolidate the structural features 119Sn Mössbauer, solid state NMR, Raman, IR and UV/vis spectroscopic measurements are performed. The 119Sn Mössbauer isomer shifts and the quadrupole splitting values confirm the SnO4 coordination and Sn(II) valence states. Solid state 11B, 27Al and 119Sn NMR spectra provided insights into the local crystal-chemical environment. The vibrational properties are discussed from group theoretical analysis to mode assignments. SnAlBO4 and SnGaBO4, respectively, possess an electronic band gap of 3.73(9) and 3.21(4) eV calculated from the diffuse reflectance UV/Vis spectra.
