Spectrum Atlas

azulene+OH C10H8O

B_0a482de015 · SMILES Oc1ccc2cccccc1-2 · InChIKey VETGQECQXHDROF-UHFFFAOYSA-N

Cheap level done analytic check agrees

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

51 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
197.3117.9+20.5
2172.0190.8+18.8
3206.8244.8+38.0
4246.8283.3+36.6
5293.5289.6-3.9
6329.5309.1-20.4
7405.3343.9-61.4
8433.5406.4-27.1
9451.9465.1+13.2
10502.4466.7-35.7
11584.7590.5+5.8
12627.9601.2-26.6
13656.3646.6-9.7
14695.0682.1-12.9
15708.4708.3-0.2
16750.7710.5-40.3
17770.7766.9-3.8
18780.6796.2+15.7
19854.2861.4+7.3
20897.4873.8-23.6
21897.6906.9+9.3
22963.1927.9-35.1
23967.3981.6+14.3
24979.0990.0+10.9
25996.91004.5+7.7
261018.01032.8+14.9
271042.51048.9+6.4
281071.11077.8+6.7
291183.61165.8-17.8
301203.61220.0+16.3
311255.61264.3+8.6
321278.31274.5-3.8
331334.51325.9-8.6
341346.81350.4+3.6
351400.81409.6+8.8
361439.41455.9+16.6
371477.71483.0+5.3
381506.71518.0+11.3
391521.21543.8+22.6
401587.01610.2+23.2
411600.11624.8+24.7
421648.41688.5+40.1
431667.51697.5+29.9
443110.13159.1+49.1
453149.93195.4+45.5
463156.63201.7+45.1
473180.13224.2+44.2
483188.33231.9+43.6
493233.73275.0+41.3
503250.43291.9+41.5
513755.83793.8+38.1

Second route

Analytic Hessian (pyscf, grid 99/590) against the corpus finite differences: b3lyp max |Δω| 1 cm⁻¹; wb97x max |Δω| 5 cm⁻¹.

Provenance

  • Releases: none yet
  • Entered the corpus as: cores with one or two substituents, enumerated from the parents (layer B)
  • Run: ubuntu-32gb-hel1-18, 2026-09-26 03:43:33 → 2026-09-26 04:13:44, 1810 s, peak 3.29 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest