Exploratory synthesis in molten salts: Role of flux basicity in the stabilization of the complex thiogermanates Cs 4Pb 4Ge 5S 16, K 2PbGe 2S 6, and K 4Sn 3Ge 3S 14

Oleg Palchik, Gregory M. Marking, Mercouri G. Kanatzidis

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The influence of the Lewis basicity of alkali polysulfide fluxes (A 2S x) (A = alkali) as a function of x on the respective reactivities of Pb and Sn with Ge was studied and found to be strong. Cs 4Pb 4Ge 5S 16, K 2PbGe 2S 6, and K 4Sn 3Ge 3S 14 could be prepared only under low basicity with S/A 2S ratios of ≥ 11. These compounds display complex frameworks and are semiconductors. Cs 4Pb 4Ge 5S 16 is luminescent with red emission.

Original languageEnglish
Pages (from-to)4151-4153
Number of pages3
JournalInorganic Chemistry
Issue number12
Publication statusPublished - Jun 13 2005


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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