Sodium ozonide

Sodium ozonide
Names
IUPAC name
Sodium ozonide
Identifiers
3D model (JSmol)
  • InChI=1S/Na.HO3/c;1-3-2/h;1H/q+1;/p-1
    Key: ZWXLQJCNVRJOAA-UHFFFAOYSA-M
  • [Na+].[O-]O[O]
Properties
NaO3
Appearance Intensely red solid[1]
Structure[1]
Sodium nitrite structure (orthorhombic)
Im2m (No. 44)
a = 3.5070 Å, b = 5.7703 Å, c = 5.2701 Å
106.777 Å3
2
Related compounds
Other anions
 Sodium fluoride
Sodium chloride
Sodium bromide
Sodium iodide
Other cations
 Potassium ozonide
Rubidium ozonide
Caesium ozonide
Related sodium oxides
 Sodium oxide
Sodium peroxide
Sodium superoxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Sodium ozonide (NaO3) is an oxygen-rich compound of sodium. As an ozonide, it contains the ozonide anion (O3−).

Some experiments report creating sodium ozonide by applying ozone to sodium hydroxide,[2] but the substance was not pure, and the claimed stability at room temperature was contradicted by other reports.[3] This is in contrast to potassium ozonide, rubidium ozonide, and caesium ozonide, which can be synthesized applying ozone directly to the metal. Instead, it is made in ammonia solution using ion exchange and cryptands.[1][4]

The compound is unstable at room temperature and decomposes at -10 °C to sodium superoxide and oxygen.[5]

2 NaO3 → 2 NaO2 + O2

However, the compound can be stored for months at -18 °C.[1]

  1. ^ a b c d Klein, Wilhelm; Armbruster, Klaus; Jansen, Martin (1998). "Synthesis and crystal structure determination of sodium ozonide". Chemical Communications (6). Royal Society of Chemistry (RSC): 707–708. doi:10.1039/a708570b. ISSN 1359-7345.
  2. ^ McLachlan, A. D.; Symons, M. C. R.; Townsend, M. G. (1959). "193. Unstable intermediates. Part V. Ozonides and superoxides". Journal of the Chemical Society (Resumed). Royal Society of Chemistry (RSC): 952. doi:10.1039/jr9590000952. ISSN 0368-1769.
  3. ^ Solomon, I. J.; Kacmarek, A. J. (1960). "Sodium Ozonide". The Journal of Physical Chemistry. 64 (1). American Chemical Society (ACS): 168–169. doi:10.1021/j100830a507. ISSN 0022-3654.
  4. ^ Korber, Nikolaus; Jansen, Martin (1992). "Synthesewege zu neuen ionischen Ozoniden" [Synthetic Routes to New Ionic Ozonides]. Chemische Berichte (in German). 125 (6). Wiley: 1383–1388. doi:10.1002/cber.19921250613. ISSN 0009-2940.
  5. ^ Tokareva, S. A.; Pilipenko, G. P. (1964). "Thermal decomposition of sodium ozonide". Bulletin of the Academy of Sciences, USSR Division of Chemical Science. 13 (4). Springer Science and Business Media LLC: 686–688. doi:10.1007/bf00845322. ISSN 0568-5230.