Synthesis and Structure of New Rare Earth Cadmium Tellurite Halides

Single crystals of novel rare earth–cadmium tellurite halides, [Ln 12 (TeO 3 ) 12 ][Cd 6 X 24 ] (Ln = La, X = Cl ( 1 ); Ln = La, X= Br ( 2 ), and Ln = Pr, X = Br ( 3 )), were obtained from melts. All three compounds are isostructural to layered tellurite halides [Ln 12 (TeO 3 ) 12 ][Cd 6 Cl 24 ] (Ln...

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Published inRussian journal of inorganic chemistry Vol. 65; no. 4; pp. 466 - 471
Main Authors Charkin, D. O., Grishaev, V. Yu, Volkov, S. N., Dolgikh, V. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2020
Springer Nature B.V
Subjects
Bromides
Bromine
Cadmium
Chemistry
Chemistry and Materials Science
Crystal structure
Crystals
Earth
Halides
Inorganic Chemistry
Lanthanum
Single crystals
Synthesis and Properties of Inorganic Compounds
Tellurium dioxide
Unit cell
single crystals
layered structures
rare earth compounds
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Summary:Single crystals of novel rare earth–cadmium tellurite halides, [Ln 12 (TeO 3 ) 12 ][Cd 6 X 24 ] (Ln = La, X = Cl ( 1 ); Ln = La, X= Br ( 2 ), and Ln = Pr, X = Br ( 3 )), were obtained from melts. All three compounds are isostructural to layered tellurite halides [Ln 12 (TeO 3 ) 12 ][Cd 6 Cl 24 ] (Ln = Sm, Eu), described earlier, and crystallize in space group P 4/ nbm with unit cell parameters a ~ 16 Å and c ~ 13 Å. Their crystal structures have been refined to R obs = 0.052, 0.047, and 0.049, respectively. Bromides adopting this structure have been synthesized for the first time. Crystal-chemical features and prospects for development are discussed for the family of rare earth chalcogenite halides containing [Ln 11 M x (ChO 3 ) 12 ] rare earth–chalcogenite slabs.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023620040038