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 language | English (US) |
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Pages (from-to) | 71-76 |
Number of pages | 6 |
Journal | Journal of Alloys and Compounds |
Volume | 280 |
Issue number | 1-2 |
DOIs | |
State | Published - Oct 23 1998 |
Funding
Financial support from the National Science Foundation DMR-9527347 and the Center for Fundamental Materials Research is gratefully acknowledged. MGK is an A.P. Sloan Foundation, and a Camille and Henry Dreyfus Teacher Scholar 1993–98. This work made use of the SEM facilities of the Center for Electron Optics at Michigan State University.
Keywords
- Polythioantimonate flux synthesis
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry