Carbon tetroxide

"CO4" redirects here. For the Colchester postal district, see CO postcode area.
Carbon tetroxide
Names
IUPAC name
C2v isomer:
  • 1,2,3-Trioxetan-4-one
  • Oxygen carbonate
  • Monooxygen carbonate

D2d isomer:

  • Carbon diperoxide
Other names
C2v isomer:
  • 4-Trioxetanone
  • Trioxetan-4-one

D2d isomer:

  • 1,2,4,5-Tetraoxaspiro[2.2]pentane
Identifiers
3D model (JSmol)
  • InChI=1S/CO4/c2-1-3-5-4-1
    Key: ITOJEBDYSWRTML-UHFFFAOYSA-N
  • O=C1OOO1
Properties
CO4
Molar mass 76.007 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Carbon tetroxide or Oxygen carbonate (in its C2v isomer) is a highly unstable oxide of carbon with formula CO
4. It was proposed as an intermediate in the O-atom exchange between carbon dioxide (CO
2) and oxygen (O
2) at high temperatures. The C2v isomer, which is 138 kJ mol−1 more stable than the D2d isomer, was first detected in electron-irradiated ices of carbon dioxide via infrared spectroscopy.

The D2d isomer of carbon tetroxide

The isovalent carbon tetrasulfide CS4 is also known from inert gas matrix. It has D2d symmetry with the same atomic arrangement as CO4 (D2d).

References

  1. ^ Yeung, L. Y.; Okumura, M.; Paci, J. T.; Schatz, G. C.; Zhang, J.; Minton, T. K. (2009). "Hyperthermal O-Atom Exchange Reaction O2 + CO2 through a CO4 Intermediate" (PDF). Journal of the American Chemical Society. 131 (39): 13940–13942. doi:10.1021/ja903944k. PMID 19743846.
  2. ^ Jamiesona, Corey S.; Mebelb, Alexander M.; Kaiser, Ralf I. (2007). "Novel Detection of the C2v isomer of carbon tetraoxide (CO4". Chemical Physics Letters. 440 (1–3): 105–109. Bibcode:2007CPL...440..105J. doi:10.1016/j.cplett.2007.04.043.
  3. ^ Maity, Surajit; Kim, Y.S.; Kaiser, Ralf I.; Lin, Hong Mao; Sun, Bian Jian; Chang, A.H.H. (July 2013). "On the detection of higher order carbon sulfides (CSx; x=4–6) in low temperature carbon disulfide ices". Chemical Physics Letters. 577: 42–47. Bibcode:2013CPL...577...42M. doi:10.1016/j.cplett.2013.05.039.


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