Spectrum Atlas

pyridine+NH2+CF3 C6H5F3N2

B_110bac4b37 · SMILES Nc1cncc(C(F)(F)F)c1 · InChIKey NJFRBMFEAGFNDC-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)

42 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
128.359.6+31.3
2125.7144.1+18.5
3172.0179.4+7.4
4221.3234.5+13.2
5305.3318.6+13.4
6313.4329.3+15.9
7326.4334.3+7.9
8356.0360.5+4.5
9430.1437.4+7.3
10471.5482.5+11.0
11514.2526.0+11.8
12548.2554.3+6.1
13575.4587.9+12.5
14587.4594.2+6.8
15654.5665.9+11.4
16666.4673.0+6.6
17727.9738.3+10.4
18746.9753.8+6.9
19886.5908.3+21.9
20910.5934.0+23.4
21936.8948.3+11.5
22939.5965.3+25.8
231031.41038.2+6.9
241100.61111.3+10.6
251119.11128.4+9.3
261187.31210.1+22.8
271197.91212.7+14.8
281229.91241.4+11.6
291289.81291.9+2.1
301331.81307.4-24.3
311369.51374.1+4.6
321380.91403.5+22.5
331497.91519.2+21.3
341524.91544.8+19.9
351628.51666.2+37.7
361662.31694.6+32.2
371694.91717.7+22.8
383151.03196.0+45.0
393205.43249.5+44.1
403209.33252.7+43.5
413559.63606.8+47.2
423658.93708.0+49.1

Second route

Analytic Hessian (pyscf, grid 99/590) against the corpus finite differences: b3lyp max |Δω| 7 cm⁻¹; wb97x max |Δω| 4 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, 2026-09-27 21:31:44 → 2026-09-27 21:54:02, 1338 s, peak 2.87 GB, deck 9e27bf8e9348
  • Imaginary modes: B3LYP 0, ωB97X 0
  • Source files: corpus factory · manifest