BaLn2Se4 (Ln = Er, Tm and Yb)
Identifieur interne : 001044 ( Main/Curation ); précédent : 001043; suivant : 001045BaLn2Se4 (Ln = Er, Tm and Yb)
Auteurs : Daniel E. Bugaris [États-Unis] ; James A. Ibers [États-Unis]Source :
- Acta Crystallographica Section C [ 0108-2701 ] ; 2009-09-15.
English descriptors
- KwdEn :
- Acta, Acta cryst, Alfa aesar, Bruker, Cation, Cell volume, Cryst, Crystal data, Data collection bruker apexii diffractometer absorption correction, Diffraction data, Dimer, Flahaut, Ibers, Ionic radii, Lanthanide, Mmol, Orthorhombic, Orthorhombic space group pnma, Pnma, Sadabs, Sheldrick, Structure type, Tmin tmax, Unit cell.
- Teeft :
- Acta, Acta cryst, Alfa aesar, Bruker, Cation, Cell volume, Cryst, Crystal data, Data collection bruker apexii diffractometer absorption correction, Diffraction data, Dimer, Flahaut, Ibers, Ionic radii, Lanthanide, Mmol, Orthorhombic, Orthorhombic space group pnma, Pnma, Sadabs, Sheldrick, Structure type, Tmin tmax, Unit cell.
Abstract
The compounds BaLn2Se4 (Ln = rare‐earth metal = lanthanide = Er, Tm and Yb), namely barium di(erbium/thulium/ytterbium) tetraselenide, crystallize in the orthorhombic space group Pnma in the CaFe2O4 structure type. In this structure type, all atoms possess m symmetry. The Ln atoms are octahedrally coordinated by six Se atoms. A three‐dimensional channel structure is formed by the corner‐ and edge‐sharing of these LnSe6 octahedra. The Ba atoms are coordinated to eight Se atoms in a bicapped trigonal–prismatic arrangement, and they occupy the channels of the three‐dimensional framework.
Url:
DOI: 10.1107/S0108270109030571
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<front><div type="abstract" xml:lang="en">The compounds BaLn2Se4 (Ln = rare‐earth metal = lanthanide = Er, Tm and Yb), namely barium di(erbium/thulium/ytterbium) tetraselenide, crystallize in the orthorhombic space group Pnma in the CaFe2O4 structure type. In this structure type, all atoms possess m symmetry. The Ln atoms are octahedrally coordinated by six Se atoms. A three‐dimensional channel structure is formed by the corner‐ and edge‐sharing of these LnSe6 octahedra. The Ba atoms are coordinated to eight Se atoms in a bicapped trigonal–prismatic arrangement, and they occupy the channels of the three‐dimensional framework.</div>
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