This title appears in the Scientific Report :
2019
Please use the identifier:
http://dx.doi.org/10.1016/j.jallcom.2018.10.239 in citations.
Layered copper thioaluminate K2Cu3AlS4: Synthesis, crystal structure, characterization and solid-state 27Al and 39K NMR studies
Layered copper thioaluminate K2Cu3AlS4: Synthesis, crystal structure, characterization and solid-state 27Al and 39K NMR studies
The first example of alkali/transition metal thioaluminates K2Cu3AlS4 was synthesized and characterized. The compound crystallizes in the orthorhombic space group Pnna (no. 52), with unit cell parameters a = 5.471 (6) Å, b = 5.468 (6) Å and c = 13.111 (1) Å, within a pseudo-tetragonal lattice. Its c...
Saved in:
Personal Name(s): | Alahmari, Fatimah (Corresponding author) |
---|---|
Dey, Somnath / Emwas, Abdul-Hamid / Davaasuren, Bambar / Rothenberger, Alexander | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Journal of alloys and compounds, 776 (2019) S. 1041 - 1047 |
Imprint: |
Amsterdam [u.a.]
ScienceDirect
2019
|
DOI: |
10.1016/j.jallcom.2018.10.239 |
Document Type: |
Journal Article |
Research Program: |
Electrochemical Storage |
Publikationsportal JuSER |
The first example of alkali/transition metal thioaluminates K2Cu3AlS4 was synthesized and characterized. The compound crystallizes in the orthorhombic space group Pnna (no. 52), with unit cell parameters a = 5.471 (6) Å, b = 5.468 (6) Å and c = 13.111 (1) Å, within a pseudo-tetragonal lattice. Its crystal structure consists of 2D [Cu3AlS4]2- polyanionic anti-PbO type layers, in which Al and Cu atoms share the atomic positions, separated by K+ cations. The (Cu/Al) atomic positions are tetrahedrally coordinated by S atoms, whereas K atoms are surrounded by eight S atoms in a cubic fashion. The coordination environments of the Al and K cations were confirmed by solid-state 27Al and 39K NMR, respectively. The title compound is a semiconductor with a direct bandgap of 2.96 eV, and thermally stable up to 550 °C |