Abstract
Four europium compounds, LiEuAsS3 (I), KEuAsS3 (IIa), RbEuAsS3 (IIb), and CsEuAsS3 (IIc), containing As 3+ were synthesized in molten alkali-metal polysulfide salts. An As-rich flux was found to be necessary to stabilize the pyramidal building unit [AsS3]3-. All crystallize in the monoclinic space group P21/c with two new structure types. Compound I features a new coordination mode for the [AsS3]3- unit and three-dimensional [Eu(AsS3)]- framework. Compounds IIa-c are isostructural and feature a layer of [Eu(AsS3)]- with an unusual μ5-sulfide anion in a umbrella-like geometry. The compounds are paramagnetic semiconductors with an energy gap of ∼2.0 eV.
| Original language | English |
|---|---|
| Pages (from-to) | 7068-7070 |
| Number of pages | 3 |
| Journal | Inorganic Chemistry |
| Volume | 47 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - Aug 18 2008 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
Fingerprint Dive into the research topics of 'AEuAsS<sub>3</sub> (A = Li, K, Rb, and Cs): New As<sup>3+</sup> species from an arsenic-rich polysulfide flux'. Together they form a unique fingerprint.
Cite this
Bera, T. K., & Kanatzidis, M. G. (2008). AEuAsS3 (A = Li, K, Rb, and Cs): New As3+ species from an arsenic-rich polysulfide flux. Inorganic Chemistry, 47(16), 7068-7070. https://doi.org/10.1021/ic801017h