Synthesis and Structural Characterization of Cs<sub>2</sub>Ga<sub>2</sub>Se<sub>5</sub>
Abstrak
AbstractCs2Ga2Se5 was obtained by the reaction of CsN3 with stoichiometric amounts of GaSe and Se at elevated temperature. It forms yellow crystals embedded in a pure orange microcrystalline powder. The crystal structure of Cs2Ga2Se5 was determined by single‐crystal X‐ray diffraction at 123 K. The compound crystallizes monoclinically in the space group C2/c (No. 15) with a = 15.3911(5) Å, b = 7.3577(2) Å, c = 12.9219(3) Å, β = 126.395(3)°, V = 1177.89(7) Å3, and Z = 4. The structure features one‐dimensional chains 1∞[Ga2Se3(Se2)2–], consisting of edge‐ and corner sharing GaSe4 tetrahedra. Raman spectroscopic measurements reveal vibrational bands of the Se22– units at 236 cm–1, and the bands of Ga–Se vibrations at 254 and 273 cm–1. UV/Vis diffuse reflectance spectroscopy shows the bandgap at about 1.95 eV.
Penulis (3)
Daniel Friedrich
Marc Schlosser
Arno Pfitzner
Akses Cepat
- Tahun Terbit
- 2014
- Bahasa
- en
- Total Sitasi
- 15×
- Sumber Database
- CrossRef
- DOI
- 10.1002/zaac.201400046
- Akses
- Open Access ✓