Polythioantimonate flux synthesis of the low-dimensional compounds A2AuSbS4 (A=Rb, Cs)

Jason A. Hanko, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The reaction of Au with a molten mixture of A2S/Sb/S (A=Rb, Cs) produced the isostructural quaternary compounds A2AuSbS4. The yellow-brown crystals of Rb2AuSbS4 (I) and yellow crystals of Cs2AuSbS4 (II) are stable in air and water for several days and for over a month for I and II, respectively. The structure of Rb2AuSbS4 crystallizes in the space group Pbcm (#57) and at 23°C a=6.804(3) Å, b=20.127(4) Å, c=7.195(4) Å, V=985(1) Å3, Z=8. Final R/Rw =4.5/6.6%. This structure consists of one-dimensional [AuSbS4]2n- n chains separated by A+ cations. The chains are comprised of Au+ cations linearly coordinated to [SbS4]3- tetrahedra. The compounds were characterized with differential thermal analysis (DTA), far-IR, Raman, and solid-state UV/vis diffuse reflectance spectroscopy.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalJournal of Alloys and Compounds
Volume280
Issue number1-2
Publication statusPublished - Oct 23 1998

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Cations
Positive ions
Fluxes
Crystals
Differential thermal analysis
Molten materials
Spectroscopy
Water
Air

Keywords

  • Polythioantimonate flux synthesis

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Polythioantimonate flux synthesis of the low-dimensional compounds A2AuSbS4 (A=Rb, Cs). / Hanko, Jason A.; Kanatzidis, Mercouri G.

In: Journal of Alloys and Compounds, Vol. 280, No. 1-2, 23.10.1998, p. 71-76.

Research output: Contribution to journalArticle

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AB - The reaction of Au with a molten mixture of A2S/Sb/S (A=Rb, Cs) produced the isostructural quaternary compounds A2AuSbS4. The yellow-brown crystals of Rb2AuSbS4 (I) and yellow crystals of Cs2AuSbS4 (II) are stable in air and water for several days and for over a month for I and II, respectively. The structure of Rb2AuSbS4 crystallizes in the space group Pbcm (#57) and at 23°C a=6.804(3) Å, b=20.127(4) Å, c=7.195(4) Å, V=985(1) Å3, Z=8. Final R/Rw =4.5/6.6%. This structure consists of one-dimensional [AuSbS4]2n- n chains separated by A+ cations. The chains are comprised of Au+ cations linearly coordinated to [SbS4]3- tetrahedra. The compounds were characterized with differential thermal analysis (DTA), far-IR, Raman, and solid-state UV/vis diffuse reflectance spectroscopy.

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