X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

Sidey, Vasyl; Zubaka, O. V.; Solomon, A. M.; Kun, S. V.; Peresh, E. Yu.

doi:10.1016/j.jallcom.2003.08.021

Cited by 15 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2) can be conveniently derived from that of perovskite (ABX 3 ) by removing one half of the B-type cations so that every transition metal-halogen octahedron in the structure of K 2 PtCl 6 is isolated from other octahedra of the same kind. More detailed information about the cubic K 2 PtCl 6 structure type can be found in [3] or in any textbook on inorganic crystal chemistry.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

“…This work is part of an ongoing systematic physicochemical investigation of quasibinary halide systems AX-BX 4 (where A = K, Rb, Cs, Tl; B = Se, Te; X = Br, I) [1][2][3][4][5]. Most of the aforementioned quasibinary systems are characterized by the formation of A 2 BX 6 intermediate phases, which melt congruently and have interesting optical and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

X-ray Rietveld structure refinement and bond-valence analysis of Cs2TeI6

Sidey¹,

Zubaka²,

Stercho³

et al. 2010

Chem. Met. Alloys

Self Cite

View full text Add to dashboard Cite

The crystal structure of the ternary iodide Cs 2 TeI 6 has been refined by Rietveld analysis of X-ray powder diffraction data. The refinement procedure was stopped when the intensity residual R B = 3.7 % had been reached. Cs 2 TeI 6 crystallizes in the cubic K 2 PtCl 6 structure type, space group Fm-3m (No. 225), with the lattice parameter a = 11.6939(8) Å, Z = 4, D c = 4.797(1) g/cm 3. The reliability of the structural model obtained for Cs 2 TeI 6 in the Rietveld refinement was confirmed by a bond-valence analysis of the structure. For the first time, the bond-valence parameters (r 0 = 2.782 Å and b = 0.37 Å) have been determined for the Te 4+ /Iion pair, from a set of 14 well-determined coordination shells [TeI n ]. These parameters show a reasonably high performance and can be recommended for routine bond-valence analyses of structures containing Te 4+-Ichemical bonds. Ternary halides / Crystal structure / Bond-valence model

show abstract

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

X-ray Rietveld structure refinement and bond-valence analysis of Cs2TeI6

Sidey¹,

Zubaka²,

Stercho³

et al. 2010

Chem. Met. Alloys

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Ref. [96][97][98][99][100][101][102] ternary compounds Tl 2 TeBr(I) 6 were detected, their homogeneity areas defined and some properties of their moncrystals examined.…”

Section: Phase Equilibria In the Tl -S -Cl (Bri ) Systemsmentioning

confidence: 99%

Physicochemical Aspects of Ternary and Complex Phases Development Based on Thallium Chalcohalides

Бабанлы¹,

Тагиев²

2018

Chemical Problems

View full text Add to dashboard Cite

The results of physical and chemical investigation of some ternary and more complex systems which are of interest in terms of obtaining thallic chalcohalides and new multicomponent phases on their basis have been systematized and analyzed in the review paper. This class of inorganic substances is of scientific and practical interest as promising functional materials with thermoelectric, optical, magnetic, sensor and detector properties. The literature data on crystal structure, thermodynamic and some physico-chemical properties of thallium chalcohalides and intermediate phases on their basis have been investigated.

show abstract

“…Reducing the ratio of the ionic radius of A + to that of Halraises the stress level in the AHal 12 polyhedra since, at a smaller radius of A + , the repulsion between the 12 Halions in each cuboctahedron is stronger. Such repulsion may give rise to tetragonal (Rb 2 TeI 6 [17], Tl 2 TeBr 6 [13]) or monoclinic (K 2 TeBr 6 [3], α-K 2 TeI 6 [18], Tl 2 TeI 6 [13]) distortions of the close packing and coordination polyhedra, leading to changes in structure type. The size of the B atoms has an insignificant effect on the structure of A 2 BHal 6 compounds because octahedral coordination with halogen atoms is possible in a rather broad range of / ratios [19].…”

Section: Phase Relations In the Systemsmentioning

confidence: 99%