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Compare vibrational frequencies in CCCBDB for H2CNCN (cyanamide, methylene)

HSEh1PBE/6-31+G**

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' 3236 3090   -47 A'   3137  
2 A' 3108 2968   760 A'   2208  
3 A' 2338 2232   611 A'   1621  
4 A' 1734 1656   200 A'   1456  
5 A' 1510 1441           
6 A' 1230 1174   -41 A'   1215  
7 A' 981 936           
8 A' 626 597           
9 A' 249 238           
10 A" 1101 1051   -39 A"   1090  
11 A" 780 745           
12 A" 372 355           
The calculated vibrational frequencies were scaled by 0.9548

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.