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uid 309

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This species has a counterpart in the theoretical library

Transitions

Frequency
[wavenumbers]
Wavelength
[microns]
Integrated cross-section
[km/mol]
3079 3.248 32.4
3060 3.269 91.8
1964 5.093 2.15
1943 5.146 0.59
1932 5.176 2.36
1924 5.199 1.46
1912 5.229 2.58
1906 5.247 1.71
1874 5.336 0.36
1864 5.365 0.16
1856 5.387 1.89
1837 5.444 1.23
1827 5.473 1.3
1818 5.501 0.48
1776 5.629 3.35
1768 5.657 5.34
1752 5.708 5.05
1726 5.794 0.57
1714 5.836 1.79
1635 6.116 6.31
1583 6.318 1.73
1577 6.342 3.05
1570 6.37 3.46
1549 6.457 7.25
1513 6.608 14.85
1494 6.693 1.77
1481 6.751 25.35
1477 6.769 11.02
1454 6.876 5.96
1450 6.898 11.25
1419 7.049 1.16
1400 7.141 44.09
1391 7.189 11.5
1336 7.486 4.23
1316 7.601 1.65
1269 7.88 2.4
1222 8.181 3.01
1216 8.227 3.42
1175 8.508 4.4
1156 8.648 0.89
1146 8.728 2.89
1112 8.992 3.85
1105 9.05 1.83
1039 9.627 4.14
1015 9.856 2.85
991.5 10.09 14.25
963.3 10.38 0.67
954.8 10.47 2.85
910.6 10.98 22.23
891.8 11.21 6.87
875.7 11.42 1.11
821.3 12.18 6.85
800.6 12.49 55.68
765.7 13.06 5.77
749.5 13.34 57.42
729 13.72 2.93
719.6 13.9 15.14
710.8 14.07 2.32
652.9 15.32 5.44
590.2 16.94 2.71
568.1 17.6 11.49
521.2 19.19 1.17
503.2 19.87 1.2

Laboratory Spectrum

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This spectrum was measured using the matrix isolation technique. Samples are prepared by co-deposition of the PAH in the gaseous state with an overabundance of argon onto a cold CsI window suspended in a high vacuum chamber (p ~ 10-8 mtorr). The CsI window temperature is held between 10 and 15 K for the duration of the experiment. The infrared spectrum of the cold CsI window is recorded prior to (I0) and immediately after sample deposition (In). The absorbance spectrum for a neutral, matrix isolated PAH is log(In/I0).

By irradiating this matrix with ultraviolet radiation from a microwave powered hydrogen discharge lamp produces ionized PAHs. The infrared spectrum is again measured (Ii), now having absorption bands due to both the neutral and ionized PAH. This absorbance spectrum (log (I/Ii)) is compared with that of the neutral PAH. Most of the new bands produced by ultraviolet irradiation are due to the ionized form of the PAH. See the provided reference for the specific details regarding the data presented here. In some cases a few bands near 1600 cm-1 may be due to H2O.

Note(s):


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84 species present in version 3.00 of the experimental database (Apr 16, 2020)