Spectrum Atlas

azulene+F C10H7F

B_0068dd87ee · SMILES Fc1cccc2cccc-2c1 · InChIKey NULHJVMZVKPFPX-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
1125.2138.3+13.1
2173.2188.5+15.3
3278.0284.1+6.0
4301.4290.8-10.7
5351.6343.4-8.2
6369.0357.6-11.5
7407.5404.5-3.0
8491.2495.6+4.5
9505.1503.1-2.0
10567.6529.2-38.5
11616.1584.4-31.6
12631.5635.5+4.0
13727.7670.1-57.6
14745.6731.4-14.2
15768.2784.3+16.1
16784.3798.3+14.0
17804.2805.3+1.2
18826.2845.1+18.9
19854.3856.1+1.8
20928.0897.6-30.5
21940.0943.4+3.5
22951.8973.8+22.0
23965.7976.2+10.5
24992.4977.3-15.1
251037.41018.7-18.8
261082.01091.6+9.6
271094.21102.1+7.9
281156.01144.9-11.1
291201.91199.1-2.8
301251.31240.9-10.4
311303.01297.5-5.4
321318.11322.7+4.6
331330.41333.1+2.7
341414.21413.9-0.3
351431.81449.7+17.9
361483.71499.7+16.0
371510.61526.6+16.0
381557.01567.0+10.1
391584.71610.8+26.2
401652.21692.6+40.5
411670.71704.7+33.9
423158.03203.0+45.0
433182.73226.8+44.1
443183.43227.8+44.5
453199.23242.7+43.5
463220.03261.3+41.4
473238.63280.1+41.5
483247.23288.7+41.5

Second route

Analytic Hessian (pyscf, grid 99/590) against the corpus finite differences: b3lyp max |Δω| 4 cm⁻¹; wb97x max |Δω| 7 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-hel1-14, 2026-09-27 11:18:19 → 2026-09-27 11:52:19, 2039 s, peak 3.3 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest