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A mixed-valent niobium oxysulfide, La~2~Nb~3~S~2~O~8~ by Laurent Cario; Houria Kabbour; Catherine Guillot-Deudon; Alain Meerschaut is a Chemistry article available to read on EtoBox.

What is A mixed-valent niobium oxysulfide, La~2~Nb~3~S~2~O~8~ about?

Dilanthanum triniobium disulfide octaoxide, La(2)Nb(3)S(2)O(8), crystallizes in the orthorhombic space group Pnnm and is isostructural with the Ln(2)Ta(3)X(2)O(8) (Ln = La, Ce, Pr and Nd, and X = S and Se) family of tantalum compounds. Nb(4+) and Nb(5+) ions co-exist in the structure and occupy different crystallographic sites. While the Nb(4+) ions are found in mixed oxygen and sulfur octahedra, the Nb(5+) ions are found in oxygen-only octahedra.

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Author

Laurent Cario; Houria Kabbour; Catherine Guillot-Deudon; Alain Meerschaut

Publisher

International Union of Crystallography; Blackwell Publishing Inc.; International Union of Crystallography (IUCr); Wiley (ISSN 0108-2701)

Published

2003

Language

EN

Field

Chemistry (Physical Sciences)