| Abstract
| - Single crystals of two new osmium-containing triple perovskites,Ba3LiOs2O9 and Ba3NaOs2O9, were grown from reactive moltenhydroxide fluxes in sealed silver tubes. They crystallize in the spacegroup P63/mmc with lattice parameters of a = 5.8025(1) Å, c =14.1468(4) Å for Ba3LiOs2O9 and a = 5.8858(1) Å, c = 14.3451(5) Å for Ba3NaOs2O9. The magnetic susceptibility of these osmatesindicates significant Os−Os coupling within the octahedra pair.
- Single crystals of two new osmium-containing triple perovskites, Ba3LiOs2O9 and Ba3NaOs2O9, were grown from reactive molten hydroxide fluxes in sealed silver tubes. The compounds crystallize in the triple perovskite structure where the osmiums are located in face-sharing octahedra pairs and the lithium (sodium) ions are located in vertex-sharing octahedra. The magnetic susceptibility of these osmates indicates significant Os−Os coupling within the octahedra pairs.
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