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

doi:10.1021/ic050087v

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

Northwestern University

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	4151-4153
Number of pages	3
Journal	Inorganic Chemistry
Volume	44
Issue number	12
DOIs	https://doi.org/10.1021/ic050087v
Publication status	Published - Jun 13 2005

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic050087v

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