Direct kinetic measurements of Criegee intermediate (CH₂OO) formed by reaction of CH₂I with O₂.

@article{Welz2012DirectKM,
  title={Direct kinetic measurements of Criegee intermediate (CH₂OO) formed by reaction of CH₂I with O₂.},
  author={Oliver Welz and John D. Savee and David L Osborn and Subith S Vasu and Carl J Percival and Dudley E. Shallcross and Craig A Taatjes},
  journal={Science},
  year={2012},
  volume={335 6065},
  pages={204-7}
}
Ozonolysis is a major tropospheric removal mechanism for unsaturated hydrocarbons and proceeds via "Criegee intermediates"--carbonyl oxides--that play a key role in tropospheric oxidation models. However, until recently no gas-phase Criegee intermediate had been observed, and indirect determinations of their reaction kinetics gave derived rate coefficients spanning orders of magnitude. Here, we report direct photoionization mass spectrometric detection of formaldehyde oxide (CH(2)OO) as a… CONTINUE READING
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