Spectrum Atlas

benzo[a]pyrene C20H12

P3_a48efac7c7 · SMILES c1ccc2c(c1)cc1ccc3cccc4ccc2c1c34 · InChIKey FMMWHPNWAFZXNH-UHFFFAOYSA-N

Cheap level done

Harmonic frequencies at the cheap level (deck v1: B3LYP and ωB97X, 6-31G*, at the B3LYP geometry)

90 vibrational modes; imaginary modes negative. Shift = ωB97X − B3LYP.

0500100015002000250030003500 wavenumber (cm⁻¹) 3 µm4 µm5 µm6 µm8 µm10 µm15 µm25 µm B3LYP ωB97X 0500100015002000250030003500 wavenumber (cm⁻¹) 3 µm4 µm5 µm6 µm8 µm10 µm15 µm25 µm B3LYP ωB97X 0100020003000 wavenumber (cm⁻¹) 3 µm5 µm10 µm20 µm B3LYP ωB97X

Band heights are not computed for this molecule yet (no dipole derivatives); positions only, at unit height. High wavenumbers on the left; the table below is the same data.

#B3LYP (cm⁻¹)ωB97X (cm⁻¹)shift
160.472.0+11.6
285.1101.6+16.5
3155.6162.9+7.3
4186.3198.1+11.8
5216.3221.2+4.9
6218.0222.3+4.3
7287.2294.3+7.1
8308.9320.2+11.2
9337.4340.0+2.6
10385.4390.0+4.6
11395.1410.1+15.0
12463.2466.7+3.5
13469.4479.4+9.9
14487.4491.1+3.8
15512.8524.6+11.8
16519.9524.8+4.9
17528.1538.7+10.7
18535.0539.2+4.2
19552.4557.9+5.5
20570.9577.8+6.8
21573.5583.7+10.3
22622.4627.5+5.1
23651.6655.7+4.2
24684.1695.7+11.7
25706.8717.8+11.1
26713.1718.3+5.2
27755.7769.2+13.6
28766.3775.5+9.1
29770.6778.0+7.4
30776.3789.8+13.4
31817.2825.7+8.5
32827.2836.0+8.8
33831.2847.2+16.0
34850.4867.1+16.6
35865.8875.7+10.0
36868.6886.6+18.0
37897.9909.8+11.9
38903.5925.2+21.6
39909.9935.3+25.4
40941.1977.1+36.0
41959.9993.3+33.4
42969.51002.4+32.8
43981.51010.2+28.8
44984.41012.0+27.6
451004.21017.9+13.7
461047.51057.7+10.2
471064.61072.6+8.0
481111.01118.9+7.9
491136.71139.7+3.0
501154.41146.8-7.7
511184.21167.5-16.7
521187.41186.9-0.6
531199.01198.1-0.9
541214.71215.4+0.7
551235.11238.5+3.3
561251.31249.5-1.8
571275.11279.5+4.4
581284.91290.2+5.3
591304.31309.4+5.2
601347.51350.4+3.0
611359.71370.3+10.6
621388.51377.1-11.4
631404.61404.4-0.1
641417.01424.3+7.2
651452.71459.6+6.9
661454.01464.1+10.1
671468.21487.1+18.8
681473.51487.3+13.8
691504.91529.4+24.5
701520.31546.6+26.2
711542.91570.9+28.1
721565.91592.3+26.4
731616.51645.8+29.3
741631.11668.4+37.3
751651.51681.5+30.0
761657.71688.8+31.1
771671.31717.3+46.0
781686.41729.8+43.5
793174.33219.6+45.3
803176.33220.7+44.4
813178.73222.4+43.7
823179.43222.9+43.4
833182.43226.4+44.0
843186.73230.2+43.5
853189.93233.3+43.3
863196.03239.7+43.7
873204.33247.4+43.1
883204.83248.3+43.5
893212.93257.3+44.4
903228.73274.7+46.0

Provenance

  • Releases: none yet
  • Entered the corpus as: pool 3, chosen by rule (decision 54): aza four-rings and five-ring systems (layer P3)
  • Run: ubuntu-32gb-hel1-2, 2026-10-15 05:03:03 → 2026-10-15 09:13:04, 15001 s, peak 8.98 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest