Neue Suboxid-Cluster [O5Ba18] in den Kristallstrukturen von Ba21M2O5 (M = Si,Ge) |
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Authors: | Caroline Rhr |
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Institution: | Caroline Röhr |
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Abstract: | Novel Suboxide Clusters O5Ba18] in the Crystal Structures of Ba21M2O5 (M = Si, Ge) The compounds Ba21M2O5 (M = Si, Ge) crystallize in the cubic system with space group Fd3m, lattice constants 2 038.3(10) pm (Si), 2 039.8(9) pm (Ge) resp. and Z = 8. The crystal structure contains isolated Si/Ge atoms coordinated by barium atoms in an icosahedral arrangement. The oxygen atoms are situated in the centers of barium octahedra, four of which share common faces with an additional central octahedron. The novel clusters O5Ba18] in principal are related to those in the crystal structures of the binary Cs/Rb suboxides. |
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Keywords: | Suboxide Intermetallic Phase Preparation Crystal Structure |
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