Perovskites and Antiperovskites. Mineralogical Fairy Tale
- Авторлар: Rastsvetaeva R.K1
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Мекемелер:
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, RAS
- Шығарылым: № 4 (2022)
- Беттер: 49-59
- Бөлім: Articles
- URL: https://journals.eco-vector.com/0032-874X/article/view/627740
- DOI: https://doi.org/10.7868/S0032874X22040068
- ID: 627740
Дәйексөз келтіру
Аннотация
Classical crystal chemistry describes various compounds based on cation-centered polyhedra and their complexes. However, there are a number of compounds with the so-called “additional” anion in the structure, which occupies a separate position, i.e. it is not boned to a high-valent cation and is not a part either of tetrahedra or octahedra. So, such structures are better explained on the basis of anion-centered polyhedral, as their physical properties directly depend on the distribution of chemical bonds in their structure. We have already described compounds with anti-tetrahedra with oxygen atoms in the center and cations at the corners of a tetrahedron. This paper describes sulfates, phosphates, and silicates with octahedrons with Cl, F, or O anions at the center and cations at the vertices. These minerals contain antiperovskite fragments and are conventionally called antiperovskites.
Негізгі сөздер
Авторлар туралы
R. Rastsvetaeva
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, RAS
Email: rast.crys@gmail.com
Moscow, Russia
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