Darstellung,Eigenschaften und Kristallstruktur von RuSn6[(Al1/3–xSi3x/4)O4]2 (0 ≤ x ≤ 1/3) – einem Oxid mit isolierten RuSn6‐Oktaedern |
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Authors: | T. Sö hnel,W. Reichelt,F. E. Wagner |
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Abstract: | Preparation, Properties, and Crystal Structure of RuSn6[(Al1/3–xSi3x/4)O4]2 (0 ≤ x ≤ 1/3) – an Oxide with isolated RuSn6 Octahedra RuSn6[(Al1/3–xSi3x/4)O4]2 is obtained by the solid state reaction of RuO2, SnO2, Sn, and Si in an Al2O3‐crucible at 1273 to 1373 K. The compound is cubic with the space group Fm 3 m (a = 9.941(1) Å, Z = 4, R1 = 0.0277, wR2 = 0.0619), a semiconductor and stable in air. Results of Mößbauer measurements as well as bond length‐bond strength calculations justify the ionic formulation Ru2+Sn62+[(Al1/3–x3+Si3x/44+)O42–]2. The central motif of the crystal structure are separated RuSn6‐octahedrea. These are interconnected by oxygen atoms, arranged tetrahedrely above the surfaces of the RuSn6‐octahedrea and partialy filled with Al and Si, respectively. Because of these features the compound can be considered as a variant of the crystal structure type of pentlandite. |
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Keywords: | Ruthenium compounds Tin compounds Crystal structure Moessbauer spectroscopy |
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