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uid 404
symmetry C1
scaling factor 0.958

Transitions

Frequency
[wavenumbers]
Wavelength
[microns]
Integrated cross-section
[km/mol]
Symmetry Scaling factor
3486 2.869 43.13 A 0.958
3430 2.915 10.91 A 0.958
3083 3.244 24.64 A 0.958
3075 3.252 23.52 A 0.958
3069 3.258 26.36 A 0.958
3058 3.271 10.3 A 0.958
3044 3.285 3.975 A 0.958
3030 3.301 26.07 A 0.958
2820 3.546 54.73 A 0.958
1582 6.323 8.871 A 0.958
1547 6.465 2.702 A 0.958
1523 6.566 64.66 A 0.958
1484 6.738 14.7 A 0.958
1451 6.894 14.76 A 0.958
1426 7.013 1.075 A 0.958
1367 7.317 19.66 A 0.958
1349 7.414 11.1 A 0.958
1314 7.609 3.078 A 0.958
1285 7.783 10.27 A 0.958
1274 7.851 13.05 A 0.958
1238 8.076 8.601 A 0.958
1219 8.206 0.5938 A 0.958
1197 8.356 10.47 A 0.958
1176 8.502 1.947 A 0.958
1156 8.649 60.41 A 0.958
1123 8.907 84.2 A 0.958
1116 8.958 27.07 A 0.958
1077 9.289 176.8 A 0.958
1029 9.715 0.6007 A 0.958
982.2 10.18 0.0434 A 0.958
947.2 10.56 0.596 A 0.958
932.1 10.73 44.03 A 0.958
887.2 11.27 30.26 A 0.958
881.7 11.34 6.37 A 0.958
864.2 11.57 69.67 A 0.958
856.4 11.68 7.627 A 0.958
781.5 12.8 9.833 A 0.958
769.8 12.99 79.42 A 0.958
725.3 13.79 9.888 A 0.958
713.7 14.01 10.02 A 0.958
699.6 14.29 13.76 A 0.958
640.5 15.61 7.202 A 0.958
581.8 17.19 2.23 A 0.958
537.8 18.59 1.955 A 0.958
516.9 19.35 5.41 A 0.958
480.3 20.82 9.636 A 0.958
432.3 23.13 13.5 A 0.958
409.6 24.41 165.5 A 0.958
402.3 24.86 1.925 A 0.958
390.7 25.59 6.568 A 0.958
356.6 28.04 100.6 A 0.958
317.6 31.49 8.518 A 0.958
269.6 37.09 5.232 A 0.958
236.7 42.24 8.308 A 0.958
191.2 52.29 6.614 A 0.958
125.3 79.82 1.403 A 0.958
48.5 206.2 1.28 A 0.958

Vibrations

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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700 species present in version 2.00 of the theoretical database (Oct 29, 2013)