(Ag2TeS3)2·A2S 6 (A = Rb, Cs): Layers of silver thiotellurite intergrown with alkali-metal polysulfides

Sandy L. Nguyen, Joon I. Jang, John B. Ketterson, Mercouri G. Kanatzidis

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The layered compounds RbAg2TeS6 and CsAg 2TeS6 crystallize in the noncentrosymmetric space group P63cm, with a = 19.15 Å, c = 14.64 Å, and V = 4648 Å3 and a = 19.41 Å, c = 14.84 Å, and V = 4839 Å3 , respectively. The structures are composed of neutral [Ag2TeS3] layers alternating with charge-balanced salt layers containing polysulfide chains of [S6]2- and alkali-metal ions. RbAg2- TeS6 and CsAg 2TeS6 are air- and water-stable, wide-band-gap semiconductors (Eg ∼ 2.0 eV) exhibiting nonlinear-optical secondharmonic generation.

Original languageEnglish
Pages (from-to)9098-9100
Number of pages3
JournalInorganic Chemistry
Issue number20
Publication statusPublished - Oct 18 2010


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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