Carbon trioxide

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Carbon trioxide (CO3) is an unstable product of reactions between carbon dioxide, CO2, and atomic oxygen, O.[1] It is different from the carbonate ion (CO32-). It has also been detected in reactions between carbon monoxide, CO, and molecular oxygen, O2. Among other places it has been shown to be created in the drift zone of a negative corona discharge.[2] This pathway arises from reactions between carbon dioxide and atomic oxygen ions, created from molecular oxygen by free electrons in the plasma.

The Cs, D3h, and C2v isomers of carbon trioxide

Three possible isomers of carbon trioxide exist, denoted Cs, D3h, and C2v. The C2v state has been shown by various studies to be the ground state of the molecule.[3]


  • Electronic structure and spectroscopy of carbon trioxide
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  • Pople J. A. , Seeger U., Seeger R., Schleyer P. v. R. (2004). "The structure of carbon trioxide". Journal of Computational Chemistry. 1 (2): 199–203. doi:10.1002/jcc.540010215.
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  • DeMore W. B., Jacobsen C. W. (1969). "Formation of carbon trioxide in the photolysis of ozone in liquid carbon dioxide". Journal of Physical Chemistry. 73 (9): 2935–2938. doi:10.1021/j100843a026.
  • DeMore W. B., Dede C. (1970). "Pressure dependence of carbon trioxide formation in the gas-phase reaction of O(1D) with carbon dioxide". Journal of Physical Chemistry. 74 (13): 2621–2625. doi:10.1021/j100707a006.
  • Francisco J. S., Williams I. H. (1985). "A theoretical study of the force field for carbon trioxide". Chemical Physics. 95 (3). doi:10.1016/0301-0104(85)80160-9. Text " pages 373-383
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