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uid 541

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This species has a counterpart in the theoretical library

Transitions

Frequency
[wavenumbers]
Wavelength
[microns]
Integrated cross-section
[km/mol]
2315 4.32 308.2
2136 4.682 515.8
2069 4.833 111.9
2008 4.98 59.55
1937 5.163 103
1791 5.583 429.9
1732 5.774 476.2
1689 5.921 852.2
1663 6.013 265.8
1648 6.068 553.4
1526 6.553 130.8
1500 6.667 84.08
1443 6.93 119.5
1377 7.262 133.6
1338 7.474 265.9
1274 7.849 365.6
1258 7.949 126.2
1239 8.071 525.8
1152 8.681 122.9
911 10.98 50.68
885 11.3 227.8
839 11.92 135.9
782 12.79 137.5
764 13.09 284
734 13.62 351.8
720 13.89 603.8
717 13.95 488.4
698 14.33 23.78
692 14.45 13.25
675 14.81 6.027
665 15.04 3.486
651 15.36 28.76
626 15.97 68.86
613 16.31 77.79
588 17.01 530.1
578 17.3 94.59
574 17.42 128.9
540 18.52 92.52
535 18.69 102.3
526 19.01 38.48
522 19.16 30.12

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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75 species present in version 2.00 of the experimental database (Nov 13, 2013)