Syntheses and Crystal Structures of BaAgTbS3, BaCuGdTe3, BaCuTbTe3, BaAgTbTe3, and CsAgUTe3

Jai Prakash, Adel Mesbah, Jessica C. Beard, James A Ibers

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Abstract

Five new quaternary chalcogenides of the 1113 family, namely BaAgTbS3, BaCuGdTe3, BaCuTbTe3, BaAgTbTe3, and CsAgUTe3, were synthesized by the reactions of the elements at 1173-1273 K. For CsAgUTe3 CsCl flux was used. Their crystal structures were determined by single-crystal X-ray diffraction studies. The sulfide BaAgTbS3 crystallizes in the BaAgErS3 structure type in the monoclinic space group C3,2h-C2/m, whereas the tellurides BaCuGdTe3, BaCuTbTe3, BaAgTbTe3, and CsAgUTe3 crystallize in the KCuZrS3 structure type in the orthorhombic space group D1 ,2 7 ,h-Cmcm. The BaAgTbS3 structure consists of edge-sharing [TbS6 9-] octahedra and [AgS5 9-] trigonal pyramids. The connectivity of these polyhedra creates channels that are occupied by Ba atoms. The telluride structure features 2 [MLnTe3 2-] layers for BaCuGdTe3, BaCuTbTe3, BaAgTbTe3, and 2 [AgUTe3 1-] layers for CsAgUTe3. These layers comprise [MTe4] tetrahedra and [LnTe6] or [UTe6] octahedra. Ba or Cs atoms separate these layers. As there are no short Q⋯Q (Q = S or Te) interactions these compounds achieve charge balance as Ba2+M+Ln3+(Q2-)3 (Q = S and Te) and Cs+Ag+U4+(Te2-)3.

Original languageEnglish (US)
Pages (from-to)1253-1257
Number of pages5
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume641
Issue number7
DOIs
Publication statusPublished - Jun 1 2015

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Keywords

  • Actinides
  • Crystal structures
  • Lanthanides
  • Quaternary chalcogenides

ASJC Scopus subject areas

  • Inorganic Chemistry

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