The title compound, NpCuSe2, is the first ternary neptunium transition-metal chalcogenide. It was synthesized from the elements at 873 K in an evacuated fused-silica tube. Single crystals were grown by vapor transport with I2. NpCuSe2 crystallizes in the LaCuS2 structure type and can be viewed as a stacking of layers of CuSe4 tetra-hedra and of double layers of NpSe7 monocapped trigonal prisms along . Because there are no Se - Se bonds in the structure, the formal oxidation states of Np/Cu/Se may be assigned as +III/+I/-II, respectively.
|Original language||English (US)|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|State||Published - 2009|
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics