Spectrum Atlas

azulene+F C10H7F

B_0325730e3b · SMILES Fc1ccc2cccc-2cc1 · InChIKey RPBDEJNKHCPNMX-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)

48 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
1116.1128.6+12.5
2171.1179.3+8.3
3270.1275.7+5.7
4322.8327.4+4.6
5360.4360.3-0.2
6375.6381.1+5.5
7394.7404.1+9.5
8437.6450.3+12.7
9559.1491.6-67.6
10592.4608.9+16.6
11653.8672.8+19.0
12677.1680.7+3.5
13726.2684.3-41.9
14743.6727.9-15.7
15757.8745.0-12.8
16771.3782.8+11.5
17788.8808.8+20.0
18840.0846.3+6.3
19852.0867.8+15.8
20854.0870.0+16.0
21933.7920.0-13.7
22937.0943.6+6.6
23987.2960.7-26.6
24988.71015.7+27.0
251049.71017.1-32.6
261092.51089.2-3.3
271093.01098.3+5.3
281203.31207.9+4.6
291235.61234.2-1.4
301257.71239.5-18.2
311291.71267.4-24.3
321312.51324.4+11.9
331343.51335.0-8.5
341394.81397.0+2.2
351436.21455.6+19.3
361466.31479.2+12.9
371507.31525.1+17.8
381556.31564.7+8.4
391604.91630.9+26.0
401655.71688.1+32.3
411659.81696.7+36.9
423162.83208.1+45.3
433163.33208.4+45.1
443205.93249.3+43.4
453207.13250.1+43.0
463220.13261.2+41.2
473234.93276.5+41.6
483245.23286.6+41.4

Second route

Analytic Hessian (pyscf, grid 99/590) against the corpus finite differences: b3lyp max |Δω| 1 cm⁻¹; wb97x max |Δω| 3 cm⁻¹.

Provenance

  • Releases: layerB_interim_2026-09-25
  • Entered the corpus as: cores with one or two substituents, enumerated from the parents (layer B)
  • Run: ubuntu-32gb-hel1-21, 2026-09-25 09:00:29 → 2026-09-25 09:32:52, 1943 s, peak 3.35 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest