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Caesium ozonide

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Caesium ozonide
Crystal structure of Caesium ozonide
  Caesium cations, Cs  Ozonide anions, O−3

Caesium ozonide contaminated with caesium superoxide
Names
IUPAC name Caesium ozonide
Identifiers
CAS Number
3D model (JSmol)
InChI
  • InChI=1S/Cs.HO3/c;1-3-2/h;1H/q+1;/p-1Key: SLQRFWQASSLHIF-UHFFFAOYSA-M
SMILES
  • .O
Properties
Chemical formula CsO3
Molar mass 180.902 g·mol
Appearance Dark cherry red powder
Density 3.19 g/cm
Melting point 85 °C (185 °F; 358 K) (decomposes)
Related compounds
Other anions
Other cations
Related caesium oxides
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Caesium ozonide is an oxygen-rich chemical compound of caesium, with the chemical formula CsO3. It consists of caesium cations Cs and ozonide anions O−3. It can be formed by reacting ozone with caesium superoxide:

CsO2 + O3 → CsO3 + O2

The compound reacts strongly with any water in the air forming caesium hydroxide.

4 CsO3 + 2 H2O → 4 CsOH + 5 O2

If heated to between 70 and 100 °C, caesium ozonide will quickly decompose to caesium superoxide (CsO2). In fact, the compound is metastable to decomposition into caesium superoxide, slowly decomposing at room temperature, but can remain intact for months if stored at −20 °C.

Above around 8 °C, the crystal structure is of the caesium chloride type, with the ozonide ion in place of the chloride ion. At lower temperatures, the crystal structure changes to a structure identical to rubidium ozonide (RbO3), with space group P21/c.

References

  1. ^ Sokol, V. I.; Matvee, V. V.; Vol'nov, I. I. (1966). "Determination of the density and refractive index of cesium ozonide". Bulletin of the Academy of Sciences, USSR Division of Chemical Science. 15 (12). Springer Science and Business Media LLC: 2169–2171. doi:10.1007/bf00867730. ISSN 0568-5230.
  2. ^ Jansen, M.; Hesse, W. (1988). "Darstellung, Kristallstruktur und Eigenschaften von Cäsiumozonid". Zeitschrift für anorganische und allgemeine Chemie (in German). 560 (1). Wiley: 47–54. doi:10.1002/zaac.19885600106. ISSN 0044-2313.
  3. ^ Vol'nov, I. I.; Matveev, V. V. (1963). "Synthesis of cesium ozonide through cesium superoxide". Bulletin of the Academy of Sciences, USSR Division of Chemical Science. 12 (6). Springer Science and Business Media LLC: 1040–1043. doi:10.1007/bf00845494. ISSN 0568-5230.
  4. HESSE, W; JANSEN, M; SCHNICK, W (1989). "Recent results in solid state chemistry of ionic ozonides, hyperoxides, and peroxides". Progress in Solid State Chemistry. 19 (1). Elsevier BV: 47–110. doi:10.1016/0079-6786(89)90006-x. ISSN 0079-6786.
Caesium compounds


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