Spectrum Atlas

isoquinoline+F C9H6FN

B_0d3c79f4c4 · SMILES Fc1cncc2ccccc12 · InChIKey VFFQGPWQVYUFLV-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)

45 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
1150.3160.1+9.7
2175.1194.2+19.0
3262.4266.2+3.8
4269.5283.7+14.2
5425.2440.2+15.0
6459.9465.6+5.7
7475.9480.5+4.6
8480.7494.1+13.5
9552.5557.3+4.7
10586.9590.9+4.0
11590.8603.5+12.7
12649.8665.5+15.8
13722.2729.2+7.1
14770.6783.9+13.4
15785.3800.9+15.7
16803.0809.2+6.1
17880.0899.8+19.8
18897.8911.9+14.1
19903.3924.4+21.1
20942.9974.5+31.6
21970.11004.1+34.0
221001.61031.6+30.0
231046.51056.5+10.0
241094.61100.6+6.0
251157.41146.1-11.3
261184.51192.8+8.2
271196.11197.9+1.7
281266.31255.6-10.7
291282.11290.0+7.9
301307.11317.1+10.0
311376.11367.5-8.6
321421.31429.7+8.4
331435.11442.4+7.4
341469.31483.5+14.2
351502.81519.0+16.2
361558.51589.6+31.0
371623.71658.0+34.3
381644.21673.6+29.4
391685.41732.5+47.1
403157.83202.3+44.5
413186.93229.7+42.8
423196.63239.2+42.6
433203.83246.8+43.0
443210.33252.9+42.6
453225.53268.1+42.6

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-hel1-16, 2026-09-26 13:53:39 → 2026-09-26 14:19:11, 1531 s, peak 3.12 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest