Modeling of formula types of fluorite-like isomorphism products in MF2-RF3 systems

Autor:	O. V. Korsun, I. Yu. Kotova, V. P. Korsun
Rok vydání:	2007
Předmět:	Inorganic Chemistry Pure mathematics Chemistry Materials Science (miscellaneous) Structure (category theory) Crystal structure Isomorphism Physical and Theoretical Chemistry Composition (combinatorics) Fluorite Reciprocal Variable (mathematics) Solid solution
Zdroj:	Russian Journal of Inorganic Chemistry. 52:613-620
ISSN:	1531-8613 0036-0236
DOI:	10.1134/s0036023607040250
Popis:	A new conceptual model of heterovalent isomorphism is advanced for use in the theoretical investigations of compositions of solid solutions (hereafter, ss) known as nonstoichiometric phases of variable composition M1 − x RxF2 + x with a distorted fluorite structure. This model is based on several postulates and starting conditions; the schemes of reciprocal heterovalent substitutions following from them allow one to calculate formula types for theoretically possible isomorphism products. Ignoring the chemical individuality of atomic species at the sites of the crystal lattice, this simplest model is mostly hypothetical. However, this approach allows us to interpret from the general standpoint and systematize the experimental data of many researchers; it also allows us to explain some phenomena associated with heterovalent isomorphism in the systems MF2-RF3, where M = Ca, Sr, or Ba and R = Y, La, or Ln(III).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::86b2a7ca30777e3e7d47caa07a8be113 https://doi.org/10.1134/s0036023607040250 Zobrazit plný text záznamu Full text from SpringerLink