MPG

The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

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

This page is obsolete, the new page is here:

https://www.uv-vis-spectral-atlas-mainz.org

Please update your bookmarks!

(This page may still be available for a while, but it won't be updated anymore)

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany


Home

Cross Sections

Quantum Yields

Errata

Contact, Impressum, 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 / Halogeno-alkanes+radicals / Iodoalkanes(C,H,F,Cl,Br,I) / CH3I / JPL-2010(2011)_210-365K_210-365nm(rec)

DATAFILE: CH3I_JPL-2010(2011)_210-365K_210-365nm(rec).txt
NAME: iodomethane, methyl iodide
FORMULA: CH3I
AUTHOR(YEAR): JPL-2010(2011)
T: 210-365K
λ: 210-365nm(rec)
BIBLIOGRAPHY: S.P. Sander, J. Abbatt, J. R. Barker, J. B. Burkholder, R. R. Friedl, D. M. Golden, R. E. Huie, C. E. Kolb, M. J. Kurylo, G. K. Moortgat, V. L. Orkin and P. H. Wine, "Chemical Kinetics and Photochemical Data for Use in Atmospheric Studies, Evaluation Number 17", JPL Publication 10-6, Jet Propulsion Laboratory, Pasadena, 2011; http://jpldataeval.jpl.nasa.gov/
COMMENTS: JPL-2010 recommendation, adopting the earlier recommendations of

S.P. Sander, R.R. Friedl, D.M. Golden, M.J. Kurylo, R.E. Huie, V.L. Orkin, G.K. Moortgat, A.R. Ravishankara, C.E. Kolb, M.J. Molina, and B.J. Finlayson-Pitts, “Chemical Kinetics and Photochemical Data for Use in Atmospheric Studies. Evaluation Number 14“, JPL Publication 02-25, Jet Propulsion Laboratory, Pasadena, 2002; http://jpldataeval.jpl.nasa.gov/ , and

S.P. Sander, R.R. Friedl, D.M. Golden, M.J. Kurylo, G.K. Moortgat, H. Keller-Rudek, P.H. Wine, A.R. Ravishankara, C.E. Kolb, M.J. Molina, B.J. Finlayson-Pitts, R.E. Huie, V.L. Orkin, “Chemical Kinetics and Photochemical Data for Use in Atmospheric Studies. Evaluation Number 15“, JPL Publication 06-2, Jet Propulsion Laboratory, Pasadena, 2006; http://jpldataeval.jpl.nasa.gov/ :

Absorption cross sections σ:

210-230 nm, mean of the data of

M.E. Jenkin, T.P. Murrells, S.J. Shalliker, and G.D, Hayman, "Kinetics and product study of the self-reactions of allyl and allyl peroxy radicals," J. Chem. Soc. Faraday Trans. 89, 433-446 (1993); DOI: 10.1039/FT9938900433,

A. Fahr, A.K. Nayak, and M.J. Kurylo, "The ultraviolet absorption cross sections of CH3I temperature dependent gas and liquid phase measurements," Chem. Phys. 197, 195-203 (1995); DOI: 10.1016/0301-0104(95)00172-K , and

C.M. Roehl, J.B. Burkholder, G.K. Moortgat, A.R. Ravishankara, and P.J. Crutzen, "Temperature dependence of UV absorption cross sections and atmospheric implications of several alkyl iodides," J. Geophys. Res. 102(D11), 12819-12829 (1997); DOI: 10.1029/97JD00530 ,

235-330 nm, mean of the data of

M.E. Jenkin, T.P. Murrells, S.J. Shalliker, and G.D, Hayman, "Kinetics and product study of the self-reactions of allyl and allyl peroxy radicals," J. Chem. Soc. Faraday Trans. 89, 433-446 (1993); DOI: 10.1039/FT9938900433,

A. Fahr, A.K. Nayak, and M.J. Kurylo, "The ultraviolet absorption cross sections of CH3I temperature dependent gas and liquid phase measurements," Chem. Phys. 197, 195-203 (1995); DOI: 10.1016/0301-0104(95)00172-K ,

O.V. Rattigan, D.E. Shallcross, and R.A. Cox, "UV absorption cross-sections and atmospheric photolysis rates of CF3I, CH3I, C2H5I and CH2ICl," J. Chem. Soc. Faraday Trans. 93, 2839-2846 (1997); DOI: 10.1039/A701529A, and

C.M. Roehl, J.B. Burkholder, G.K. Moortgat, A.R. Ravishankara, and P.J. Crutzen, "Temperature dependence of UV absorption cross sections and atmospheric implications of several alkyl iodides," J. Geophys. Res. 102, 12819-12829 (1997; DOI: 10.1029/97JD00530),

335-350 nm, mean of the data of

A. Fahr, A.K. Nayak, and M.J. Kurylo, "The ultraviolet absorption cross sections of CH3I temperature dependent gas and liquid phase measurements," Chem. Phys. 197, 195-203 (1995); DOI: 10.1016/0301-0104(95)00172-K ,

O.V. Rattigan, D.E. Shallcross, and R.A. Cox, "UV absorption cross-sections and atmospheric photolysis rates of CF3I, CH3I, C2H5I and CH2ICl," J. Chem. Soc. Faraday Trans. 93, 2839-2846 (1997); DOI: 10.1039/A701529A, and

C.M. Roehl, J.B. Burkholder, G.K. Moortgat, A.R. Ravishankara, and P.J. Crutzen, "Temperature dependence of UV absorption cross sections and atmospheric implications of several alkyl iodides," J. Geophys. Res. 102(D11), 12819-12829 (1997); DOI: 10.1029/97JD00530 ,

355-365 nm, data of

O.V. Rattigan, D.E. Shallcross, and R.A. Cox, "UV absorption cross-sections and atmospheric photolysis rates of CF3I, CH3I, C2H5I and CH2ICl," J. Chem. Soc. Faraday Trans. 93, 2839-2846 (1997); DOI: 10.1039/A701529A.

Temperature coefficients a1 and a2:

210-298 K,

C.M. Roehl, J.B. Burkholder, G.K. Moortgat, A.R. Ravishankara, and P.J. Crutzen, "Temperature dependence of UV absorption cross sections and atmospheric implications of several alkyl iodides," J. Geophys. Res. 102(D11), 12819-12829 (1997); DOI: 10.1029/97JD00530 ,

σ(λ, T) = σ(298 K) [1 + a1(T - 298) + a2(T - 298)2] with

--------------------------------
λ    103 a1 105 a2
(nm)  (K-1)   (K-2)
--------------------------------
200  6.25   2.62
205  8.43   4.87
210  3.07   2.42
215  2.61   2.28
220  1.06   1.22
225  1.74   1.96
230  1.47   1.67
235  1.91   2.04
240  1.74   2.06
245  1.52   2.15
250  1.20   2.11
255  0.890  1.95
260  0.882  1.93
265  1.21   2.00
270  1.77   2.11
275  2.52   2.12
280  3.62   2.24
285  4.84   2.38
290  6.14   2.57
295  7.27   2.91
300  7.82   3.53
305  7.82   3.85
310  7.37   3.71
315  6.98   3.47
320  7.39   3.54
325  7.23   2.82
330  8.93   3.74
335 10.88  4.88
340 11.30  4.46
345 15.68  8.44
350 15.94  8.22

Temperature coefficients B:

243-333 K,

O.V. Rattigan, D.E. Shallcross, and R.A. Cox, "UV absorption cross-sections and atmospheric photolysis rates of CF3I, CH3I, C2H5I and CH2ICl," J. Chem. Soc. Faraday Trans. 93, 2839-2846 (1997); DOI: 10.1039/A701529A,

ln σ(λ, T) = ln σ(λ, 298 K) + B × (T - 298) with

--------------------
λ   103 B
(nm) (K-1)
--------------------
235  0.67
240  0.61
245  0.34
250  0.08
255 -0.10
260 -0.12
265  0.10
270  0.54
275  1.33
280  2.43
285  3.74
290  4.98
295  6.38
300  6.97
305  6.84
310  6.78
315  6.75
320  6.53
325  6.79
330  7.82
335  9.34
340 10.95
345 13.58
350 16.83
355 18.91
360 17.28
365 23.63

Search cross sections

Species search:

Identifier search:

Reference search:

Full text search:

Recent additions:
since ago