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.[1] The C2visomer, 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.[2]
The isovalent
carbon tetrasulfide CS4 is also known from
inert gas matrix. It has D2d symmetry with the same atomic arrangement as CO4 (D2d).[3]
^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.
^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.