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Phosphorus dioxide (PO2) is a gaseous oxide of phosphorus. It is a free radical that plays a role in the chemiluminescence of phosphorus and phosphine.[1] It is produced when phosphates are heated to high temperatures.[2]

In the ground state the molecule is bent, like nitrogen dioxide, but there is an excited state that is linear.[1]

References

  1. ^ a b Lawrence L. Lohr (Jul 2, 1984). “A theoretical study of the gaseous oxides PO2 and PO, their anions, and their role in the combustion of phosphorus and phosphine”. The Journal of Physical Chemistry. doi:10.1021/j150667a022.
  2. ^ Bing Deng; et al. (Feb 9, 2022). “Rare earth elements from waste”. Science Advances. 8 (6). doi:10.1126/sciadv.abm3132. PMC 8827657.