New Quaternary Chalcogenides Tl2MIIMIV3Se8 and Tl2MIIMIVX4

Autor: Andrii Selezen, Yuri Kogut, Lyudmyla Piskach, Lubomir Gulay
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Proceedings, Vol 62, Iss 1, p 3 (2020)
Druh dokumentu: article
ISSN: 2504-3900
DOI: 10.3390/proceedings2020062003
Popis: New quaternary thallium-containing chalcogenides Tl2MIIMIV3X8 and Tl2MIIMIVX4 were synthesized, and their crystal structure was determined by XRD. Three Tl2MIIMIV3X8 chalcogenides crystallize in orthorhombic symmetry (S.G. P212121; Tl2CdGe3Se8 lattice parameters a = 0.76023(9), b = 1.2071(2), c = 1.7474(2) nm), eight isostructural Tl2BIIDIVX4 compounds crystallize in tetragonal symmetry, S.G. I-42m. These compounds form in the quasi-ternary systems Tl2X–MIIX–MIVX2 (X–S, Se, Te) at the component ratio 1:1:1 and 1:1:3 at the sections Tl2MIVX3–BIIX and Tl2MIIMIVX4–MIVX2, respectively. The composition of the Tl2CdGe3Se8 compound was additionally confirmed by SEM and EDS.
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