Carbon tetroxide

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
CAS Number	853179-44-9 ;
3D model (JSmol)	Interactive image;
PubChem CID	22321311;
CompTox Dashboard (EPA)	DTXSID901028836 ;
	InChI InChI=1S/CO4/c2-1-3-5-4-1 Key: ITOJEBDYSWRTML-UHFFFAOYSA-N;
	SMILES O=C1OOO1;
Properties
Chemical formula	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). Infobox references

Carbon tetroxide or Oxygen carbonate (in its C_2v 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.^[1] The C_2v isomer, which is 138 kJ mol⁻¹ more stable than the D_2d isomer, was first detected in electron-irradiated ices of carbon dioxide via infrared spectroscopy.^[2]

The isovalent carbon tetrasulfide CS₄ is also known from inert gas matrix. It has D_2d symmetry with the same atomic arrangement as CO₄ (D_2d).^[3]

References

^ 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.
^ Jamiesona, Corey S.; Mebelb, Alexander M.; Kaiser, Ralf I. (2007). "Novel Detection of the C_2v 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.
^ 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 (CS_x; 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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[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 C_2v 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 (CS_x; 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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v t e Oxocarbons
Common oxides	CO CO₂
Exotic oxides	CO₃ CO₄ CO₅ CO₆ C₂O C₂O₂ C₂O₃ C₂O₄ (1,2-Dioxetanedione and 1,3-Dioxetanedione) C₃O C₃O₂ C₃O₃ C₃O₆ C₄O₂ C₄O₄ C₄O₆ C₅O₂ C₅O₅ C₆O₆ (Cyclohexanehexone and Ethylenetetracarboxylic dianhydride) C₈O₈ C₉O₉ C₁₀O₈ C₁₀O₁₀ C₁₂O₆ C₁₂O₉ C₁₂O₁₂
Polymers	Graphite oxide C₃O₂ CO CO₂
Compounds derived from oxides	Metal carbonyls Carbonic acid Bicarbonates Carbonates Polycarbonates (Dicarbonates and Tricarbonates) Peroxydicarbonates

v t e Inorganic compounds of carbon and related ions
Compounds	CF CO CO₂ CO₃ CO₄ CO₅ CO₆ COS CS C₂S₂ CS₂ CSe₂ C₃O₂ C₃S₂ SiC
Carbon ions	Carbides [:C≡C:]²⁻, [::C::]⁴⁻, [:C=C=C:]⁴⁻ Cyanide [:C≡N:]⁻ Cyanate [:O−C≡N:]⁻ Thiocyanate [:S−C≡N:]⁻ Fulminate [:C≡N−O:]⁻ Thiofulminate [:C≡N−S:]⁻
Nanostructures	Graphite intercalation compounds Fullerides
Oxides and related	Oxides Nitrides Metal carbonyls Carbonic acid Bicarbonates Carbonates