1,2-Dioxetanedione

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1,2-Dioxetanedione
1,2-Dioxetanedione.svg
Names
IUPAC name
1,2-Dioxetane-3,4-dione
Other names
Peroxyacid ester
Identifiers
3D model (JSmol)
ChemSpider
Properties
C2O4
Molar mass 88.02 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

The chemical compound 1,2-dioxetanedione, or 1,2-dioxacyclobutane-3,4-dione, often called peroxyacid ester, is an unstable oxide of carbon (an oxocarbon) with formula C2O4. It can be viewed as a double ketone of 1,2-dioxetane (1,2-dioxacyclobutane), or a cyclic dimer of carbon dioxide.[1]

In ordinary conditions, it quickly decomposes to carbon dioxide (CO2) even at 180 K (−93.1 °C), but can be detected by mass spectrometry and other techniques.[2][3]

1,2-Dioxetanedione is an intermediate in the chemoluminescent reactions used in glowsticks.[4] The decomposition proceeds via a paramagnetic oxalate biradical intermediate.[5]

Recently it has been found that a high-energy intermediate in one of these reactions (between oxalyl chloride and hydrogen peroxide in ethyl acetate), which is presumed to be 1,2-dioxetanedione, can accumulate in solution at room temperature (up to a few micromoles at least), provided that the activating dye and all traces of metals and other reducing agents are removed from the system, and the reactions are carried out in an inert atmosphere.[6]

See also[edit]

References[edit]

  1. ^ Alfred Hassner (1985): Chemistry of Heterocyclic Compounds: Small Ring Heterocycles, Part 3: Oxiranes, Arene Oxides, Oxaziridines, Dioxetanes, Thietanes, Thietes, Thiazetes, and Others, Volume 42. ISBN 978-0-471-05624-9 ISBN 978-0-470-18720-3 John Wiley & Sons.
  2. ^ Herman F. Cordes; Herbert P. Richter; Carl A. Heller (1969). "Mass spectrometric evidence for the existence of 1,2-dioxetanedione (carbon dioxide dimer). Chemiluminescent intermediate". J. Am. Chem. Soc. 91 (25): 7209. doi:10.1021/ja01053a065. 
  3. ^ J. Stauff; W. Jaeschke; G. Schlögl (1972). Z. Naturforsch. B 27: 1434. 
  4. ^ Richard Bos; Neil W. Barnett; Gail A. Dyson; Kieran F. Lim; Richard A. Russell & Simon P. Watson (2003). "Studies on the mechanism of the peroxyoxalate chemiluminescence reaction: Part 1. Confirmation of 1,2-dioxetanedione as an intermediate using 13C nuclear magnetic resonance spectroscopy". Analytica Chimica Acta. 502 (2): 141–147. doi:10.1016/j.aca.2003.10.014. 
  5. ^ Richard Bos; Sarah A. Tonkin; Graeme R. Hanson; Christopher M. Hindson; Kieran F. Lim & Neil W. Barnett (2009). "In Search of a Chemiluminescence 1,4-Dioxy Biradical". J. Am. Chem. Soc. 131 (8): 2770–2771. doi:10.1021/ja808401p. PMID 19206238. 
  6. ^ Luiz F. M. L. Ciscato, Fernando H. Bartoloni, Erick L. Bastos, and Wilhelm J. Baader (2009), Direct Kinetic Observation of the Chemiexcitation Step in Peroxyoxalate Chemiluminescence. Journal of Organic Chemistry, volume 74, 8974–8979. doi:10.1021/jo901402k.