COMPOUNDS OF THE Tl6ВС4 AND А2TeC6 (А – ALKALI METALS AND THALLIUM (I); В – S, Se, Te; C – F, Cl, Br, I) TYPES: REGULARITIES OF CHANGES AND PREDICTION OF THE PROPERTIES

The aim of this study was to summarize the experimental information about certain physical properties chalcohalide ternary compounds such as Tl6BC4 and A2TeC6 (where A = alkali metals Tl (I); B S, Se, Te; C F, Cl, Br, I) in depending on average charge nuclei chemical elements from which these are built, well creation reasonable prognostic models based found patterns order predict corresponding hypothetical analogues.
 According results established regularities generalizations, predicted melting temperature has been estimated for first time compositions Tl6S(Se,Te)F4, T16S(Se,Te)Cl4, Tl2TeF6(Cl6), band gaps have obtained Tl6SF4(Cl4) Tl2TeF6(Cl6) compounds.
 Analysis experimentally determined crystal structures halogen) crystallizing structural family perovskite its derivatives, could suggest that Li2(Na2)TeBr6 crystallize one low-symmetric syngonies (monoclinic or triclinic), stable class with a significant difference ionic radii halogen monovalent metal.