Synthesis, structure and characterization of two new copper(T)-thioarsenates (TTT) constructed by the [AsS3]3a and CuSx units

Synthesis, structure and characterization of two new copper(T)-thioarsenates (TTT) constructed by the [AsS3]3a and CuSx units

Two new copper(T)-thioarsenates(TTT), CsCu2AsS3(1) and KCu4AsS4(2), have been synthesized solvothermally in the presence of copper powder. Compound 1 is built up of trigonal AsS3 pyramid, tetrahedral CuAsS3 and CuS3 moieties forming 4-membered, 5-membered and 6-membered rings. The fusion of these ri...

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Veröffentlicht in:Journal of solid state chemistry 2013-02, Vol.198, p.289-294
Hauptverfasser: Yao, Hua-Gang, Ji, Min, Ji, Shou-Hua, An, Yong-Lin
Format: Artikel
Sprache:eng
Schlagworte:
Anions
Cations
Chains
Channels
Pyramids
Structural analysis
Synthesis
Three dimensional
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Zusammenfassung:Two new copper(T)-thioarsenates(TTT), CsCu2AsS3(1) and KCu4AsS4(2), have been synthesized solvothermally in the presence of copper powder. Compound 1 is built up of trigonal AsS3 pyramid, tetrahedral CuAsS3 and CuS3 moieties forming 4-membered, 5-membered and 6-membered rings. The fusion of these rings produces layered anions [Cu2AsS3]a, and cesium cations are located between metal-sulfide layers. The structure of 2 consists of infinite [Cu2S2]2a chain and layered [Cu6As2S6] linked to form a three-dimensional anionic framework, [Cu4AsS4]a, and containing channels in which the potassium cations reside.
ISSN:0022-4596
DOI:10.1016/j.jssc.2012.08.039