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uid 543

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This species has a counterpart in the theoretical library

Transitions

Frequency
[wavenumbers]
Wavelength
[microns]
Integrated cross-section
[km/mol]
4859 2.058 1.319e+4
3253 3.074 56.71
3074 3.253 302
3028 3.303 67.63
2917 3.428 9.12
2900 3.448 98.19
2852 3.506 105.4
2738 3.653 146.8
2634 3.796 110
2592 3.857 51.02
2533 3.948 54.5
2492 4.013 101.4
1587 6.302 325.3
1572 6.363 5.14
1544 6.479 288.7
1456 6.868 279
1449 6.901 57.55
1430 6.994 207.5
1409 7.096 292.3
1397 7.16 72.07
1393 7.178 41.92
1390 7.197 55.75
1348 7.417 1641
1326 7.539 246.2
1274 7.849 115.9
1258 7.95 209.4
1247 8.019 87.1
1208 8.282 47.79
1170 8.551 108.7
1142 8.753 54.99
1109 9.019 37.84
1096 9.127 7.62
991.5 10.09 36.1
823 12.15 39.61
816.2 12.25 52.16
786.2 12.72 20.78
738.3 13.54 24.71
732.6 13.65 9.41
715.7 13.97 160.7
693.1 14.43 19.3
645.8 15.48 22.14
623.2 16.05 69.15
615.2 16.25 25.13
586.4 17.05 58.37

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)