The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

www.uv-vis-spectral-atlas-mainz.org

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

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany

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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 / Halogen oxides / Cl oxides / Cl2O6 / GoodeveRichardson(1937)_273-276.5K_193.6-353.9nm

DATAFILE: Cl2O6_GoodeveRichardson(1937)_273-276.5K_193.6-353.9nm.txt
NAME: dichlorine hexoxide, chloryl chlorate
FORMULA: Cl2O6
AUTHOR(YEAR): GoodeveRichardson(1937)
T: 273-276.5K
λ: 193.6-353.9nm
BIBLIOGRAPHY: C.F. Goodeve and F.D. Richardson, "The absorption spectrum of chlorine trioxide and chlorine hexoxide", Trans. Faraday Soc. 33, 453-457 (1937); DOI: 10.1039/TF9373300453
COMMENTS: Structure: O3ClOClO2

Absorption measurements by the photographic method (T = 273 and 276.5 K)

Molar extinction coefficients vs. wavenumber plotted as a smooth fit of about 50 measured data points at 220-345 nm in Fig. 1 have been digitized and converted to absorption cross sections (conversion factor 3.8235×10-21) vs. wavelength

The spectrum has originally been attributed to ClO3

Because of its shape and in spite of the low absorption cross sections, the spectrum has been attributed to Cl2O6 by

M.I. Lopez and J.E. Sicre, "Physicochemical properties of chlorine oxides. 1. Composition, ultraviolet spectrum, and kinetics of the thermolysis of gaseous dichlorine hexoxide, J. Phys. Chem. 94, 3860-3863 (1990); DOI: 10.1021/j100372a094

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