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uid 546

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This species has a counterpart in the theoretical library

Transitions

Frequency
[wavenumbers]
Wavelength
[microns]
Integrated cross-section
[km/mol]
3395 2.945 912.7
3062 3.266 39.99
3012 3.32 16.16
2830 3.534 425.5
2724 3.672 79.69
2665 3.752 114.4
2635 3.795 269.9
2601 3.844 100.5
2360 4.236 6710
2248 4.449 5768
2054 4.868 328.2
2026 4.936 10.94
2006 4.985 114.2
1982 5.046 7.306
1969 5.078 12.99
1892 5.285 54.8
1842 5.428 112.4
1740 5.745 149.1
1688 5.924 211.3
1660 6.025 98.44
1514 6.607 1950
1440 6.944 1821
1377 7.264 292
1369 7.303 216.7
1334 7.497 412.9
1315 7.603 277
1298 7.706 1104
1258 7.948 132.6
1211 8.26 3848
1125 8.891 96.18
1098 9.106 48.79
1083 9.231 86.57
1052 9.503 83.38
1039 9.626 93.55
1029 9.716 64.85
997.8 10.02 55.58
919.1 10.88 5232
873.5 11.45 6440
835.1 11.97 765.8
814.4 12.28 1716
779.6 12.83 5018
746.3 13.4 6717
739.1 13.53 66.36
734.5 13.61 88.6
715.8 13.97 7109
707 14.14 19.04
696 14.37 164.9
656.3 15.24 341
629.7 15.88 37.29
618.4 16.17 358.1

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 3.10 of the experimental database (Apr 13, 2023)