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Compare vibrational frequencies in CCCBDB for CBr2 (dibromomethylene)

LSDA/6-31G

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 A1 554 543   -55 A1   598  
2 A1 177 174   -20 A1   194  
3 B2 546 535   -125 B2   660  
The calculated vibrational frequencies were scaled by 0.9797

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.