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Neptunium(III) copper(I) diselenide.

ABSTRACT: The title compound, NpCuSe(2), 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 I(2). NpCuSe(2) crystallizes in the LaCuS(2) structure type and can be viewed as a stacking of layers of CuSe(4) tetra-hedra and of double layers of NpSe(7) monocapped trigonal prisms along [100]. 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.

SUBMITTER: Wells DM

PROVIDER: S-EPMC2968520 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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Neptunium(III) copper(I) diselenide.

Wells Daniel M DM Skanthakumar S S Soderholm L L Ibers James A JA

Acta crystallographica. Section E, Structure reports online 20090211 Pt 3

The title compound, NpCuSe(2), 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 I(2). NpCuSe(2) crystallizes in the LaCuS(2) structure type and can be viewed as a stacking of layers of CuSe(4) tetra-hedra and of double layers of NpSe(7) monocapped trigonal prisms along [100]. Because there are no Se-Se bonds in the structure, the formal oxidation states ...[more]

PMID: 21582032

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