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Compare vibrational frequencies in CCCBDB for H2COO (Dioxymethyl radical)

HF/CEP-31G*

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 A' 3443 3092           
2 A' 3312 2974           
3 A' 1920 1724   289 A'   1435  
4 A' 1585 1423   137 A'   1286  
5 A' 1340 1203   -38 A'   1241  
6 A' 568 510   -398 A'   908  
7 A' 454 408           
8 A" 1293 1161   313 A"   848  
9 A" 626 562           
The calculated vibrational frequencies were scaled by 0.898

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.