Abstract
Several non-equilibrium solid solutions belonging to the platinum-osmium systems Os0.9Pt0.1, Os0.8Pt0.2, Os0.5Pt0.5, Os0.7Pt0.3, Os0.75Pt0.25 are prepared and studied. The thermal decomposition of [Pt(NH3)4][OsCl6] in the hydrogen and helium atmosphere is investigated. It is found that the Pt0.5Os0.5 solid solution develops through the formation of (NH4)2[OsCl6] and a metallic phase based on Pt. The crystal structure of a double complex salt [Pt(NH3)4][OsCl6] is studied (X8-APEX Bruker, 1508 independent reflections, R = 2.04%). Crystal data for PtOsN4Cl6H12 are: a = 11.6216(5) Å, b = 11.0016(5) Å, c = 10.3819(5) Å, V = 1327.4(1) Å3, space group Cmca, Z = 4, d x = 3.333 g/cm3. The coordination polyhedron around Os is octahedral: 〈Os-Cl〉 2.357 Å, ∠Cl-Os-Cl 89.5–90.5°, while around Pt it is square-planar: Pt-N 2.046 Å, ∠ N-Pt-N 89.59° and 90.41°.
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Original Russian Text Copyright © 2007 by I. V. Korol’kov, A. I. Gubanov, K. V. Yusenko, I. A. Baidina, and S. A. Gromilov
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Translated from Zhurnal Strukturnoi Khimii, Vol. 48, No.3, pp.530–536, May–June, 2007.
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Korol’kov, I.V., Gubanov, A.I., Yusenko, K.V. et al. Synthesis of non-equilibrium PtxOs1−x Solid solutions. Crystal structure of [Pt(NH3)4][OsCl6]. J Struct Chem 48, 486–493 (2007). https://doi.org/10.1007/s10947-007-0073-1
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DOI: https://doi.org/10.1007/s10947-007-0073-1