The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

Hannelore Keller-Rudek1, Geert K. Moortgat2, Rolf Sander2, Rüdiger Sörensen1

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany


Cross Sections

Quantum Yields


Contact, Imprint, Acknowledgements

When referring to the Spectral Atlas, please cite our publication:

Keller-Rudek, H., Moortgat, G. K., Sander, R., and Sörensen, R.: The MPI-Mainz UV/VIS spectral atlas of gaseous molecules of atmospheric interest, Earth Syst. Sci. Data, 5, 365–373, (2013), DOI: 10.5194/essd-5-365-2013

Cross Sections / Organics (carbonyls) / Halogenated aldehydes / COCl2 / Khamaganov(2009)_298K_185nm

DATAFILE: COCl2_Khamaganov(2009)_298K_185nm.txt
NAME: phosgene, carbonyl dichloride
AUTHOR(YEAR): Khamaganov(2009)
T: 298K
λ: 185nm
BIBLIOGRAPHY: V. Khamaganov, R. Karunanandan, A. Horowitz, T.J. Dillon, and J.N. Crowley, "Photolysis of CH3C(O)CH3 at 248 and 266 nm: pressure and temperature dependent overall quantum yields", Phys. Chem. Chem. Phys. 11, 6173-6181 (2009); DOI: 10.1039/B904130C
COMMENTS: The cross section at 185 nm was derived relative to cross sections at 248 and 266 nm; this was achieved by passing a constant flow of phosgene through the 185 nm extinction optical cell and then through a multi-pass optical set-up (l = 892 cm) equipped with a diode array spectrometer to obtain simultaneous extinction (and thus relative cross sections) at 185, 248 and 266 nm

The relative cross sections were then normalized to the well-known cross section of phosgene at 248 nm from the IUPAC evaluation,

R. Atkinson, D.L. Baulch, R.A. Cox, J.N. Crowley, R.F. Hampson, R.G. Hynes, M.E. Jenkin, M.J. Rossi, J. Troe, and T.J. Wallington, "Evaluated kinetic and photochemical data for atmospheric chemistry: Volume IV - gas phase reactions of organic halogen species", Atmos. Chem. Phys. 8, 4141-4496 (2008),

to derive the effective cross section at 185 nm

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