TbNb(6)Sn(6): the first ternary compound from the rare earth–niobium–tin system

The title compound, terbium hexa­niobium hexastannide, TbNb(6)Sn(6), is the first ternary compound from the rare earth–niobium–tin system. It has the HfFe(6)Ge(6) structure type, which can be analysed as an inter­growth of the Zr(4)Al(3) and CaCu(5) structures. All the atoms lie on special positions...

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Detalles Bibliográficos
Autores principales: Oshchapovsky, Igor, Pavlyuk, Volodymyr, Fässler, Thomas F., Hlukhyy, Viktor
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2010
Materias:
Inorganic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3011672/
https://www.ncbi.nlm.nih.gov/pubmed/21589205
http://dx.doi.org/10.1107/S1600536810045964
Descripción
Sumario:The title compound, terbium hexa­niobium hexastannide, TbNb(6)Sn(6), is the first ternary compound from the rare earth–niobium–tin system. It has the HfFe(6)Ge(6) structure type, which can be analysed as an inter­growth of the Zr(4)Al(3) and CaCu(5) structures. All the atoms lie on special positions; their coordination geometries and site symmetries are: Tb (dodeca­hedron) 6/mmm; Nb (distorted icosa­hedron) 2mm; Sn (Frank–Caspar polyhedron, CN = 14–15) 6mm and [Image: see text] m2; Sn (distorted icosa­hedron) [Image: see text] m2. The structure contains a graphite-type Sn network, Kagome nets of Nb atoms, and Tb atoms alternating with Sn2 dumbbells in the channels.

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