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Compare vibrational frequencies in CCCBDB for HCNO (fulminic acid)

HF/daug-cc-pVDZ

18 11 26 13 55
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency Scaled
Frequency
Harm.
diff
Fund.
diff
Symmetry Harmonic
Frequency
Fundamental
Frequency
Comment
1 Σ 3649 3328   -8 Σ   3336  
2 Σ 2497 2277   81 Σ   2196  
3 Σ 1302 1187   -67 Σ   1254  
4 Π 619 564   27 Π   537  
5 Π 581 530   306 Π   224  
The calculated vibrational frequencies were scaled by 0.912

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.
See section Calculated; Vibrations; Scale Factors; Scale factor uncertainty for information on where the above scaling factor is from.