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- Title
Symmetry Analysis of the Complex Polytypism of Layered Rare-Earth Tellurites and Related Selenites: The Case of Introducing Transition Metals.
- Authors
Charkin, Dmitri O.; Dolgikh, Valeri A.; Omelchenko, Timofey A.; Vaitieva, Yulia A.; Volkov, Sergey N.; Deyneko, Dina V.; Aksenov, Sergey M.
- Abstract
Our systematic explorations of the complex rare earth tellurite halide family have added several new [Ln12(TeO3)12][M6X24] (M = Cd, Mn, Co) representatives containing strongly deficient and disordered metal-halide layers based on transition metal cations. The degree of disorder increases sharply with decrease of M2+ radius and the size disagreements between the cationic [Ln12(TeO3)12]+12 and anionic [M6Cl24]−12 layers. From the crystal chemical viewpoint, this indicates that the families of both rare-earth selenites and tellurites can be further extended; one can expect formation of some more complex structure types, particularly among selenites. Analysis of the polytypism of compounds have been performed using the approach of OD ("order–disorder") theory.
- Subjects
SELENITES; TRANSITION metals; TELLURITES; TRANSITION metal oxides; RARE earth metals; SYMMETRY
- Publication
Symmetry (20738994), 2022, Vol 14, Issue 10, pN.PAG
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym14102087