Cesium ozonide
Crystal structure | |||||||
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__ O 3 - __ Cs + | |||||||
Crystal system |
monoclinic |
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Space group |
P 2 1 / c (No. 14) |
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Lattice parameters |
a = 675.1 pm, b = 626.7 pm, c = 901.5 pm, β = 120.74 ° |
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General | |||||||
Surname | Cesium ozonide | ||||||
Ratio formula | CsO 3 | ||||||
Brief description |
red solid |
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External identifiers / databases | |||||||
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properties | |||||||
Molar mass | 164.9 g mol −1 | ||||||
Physical state |
firmly |
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density |
3.19 g cm −3 (20 ° C) |
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Melting point |
53 ° C (decomposition) |
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solubility |
Decomposes in water |
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safety instructions | |||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Cesium ozonide is a chemical compound of cesium and is one of the ozonides . It is a red, easily decomposable solid.
Extraction and presentation
Cesium ozonide can be obtained by reacting cesium hyperoxide with ozone and then extracting it with liquid ammonia .
properties
Cesium ozonide is a red solid that crystallizes in two different modifications . The monoclinic structure, which corresponds to that of rubidium ozonide , is stable below 8 ° C. This has the space group P 2 1 / c (space group no. 14) and the lattice constants a = 675.1 pm, b = 626.7 pm, c = 901.5 pm and β = 120.74 °, as well as four formula units per unit cell . At higher temperatures the structure corresponds to the cubic cesium chloride structure with the lattice parameter a = 436.06 pm. The ozonide ion is disordered .
Above 53 ° C, cesium ozonide decomposes, releasing oxygen and forming hyperoxide .
If cesium ozonide is dissolved in water, it reacts to form cesium hydroxide and oxygen .
Individual evidence
- ^ A b V. I. Sokol, VV Matvee, II Vol'nov: Determination of the density and refractive index of cesium ozonide . In: Russian Chemical Bulletin . tape 15 , no. 12 , 1966, pp. 2169-2171 , doi : 10.1007 / BF00867730 .
- ↑ a b c d M. Jansen, W. Hesse: Representation, crystal structure and properties of cesium ozonide . In: Journal of Inorganic and General Chemistry . tape 560 , no. 1 , May 1988, pp. 47-54 , doi : 10.1002 / zaac.19885600106 .
- ^ A b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , pp. 1285-1286.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.