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Compare vibrational frequencies in CCCBDB for CH3ONO (Methyl nitrite)

B97D3/6-31+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' 3130 3077   40 A'   3037  
2 A' 2997 2945   -5 A'   2950  
3 A' 1658 1630   17 A'   1613  
4 A' 1460 1435   -20 A'   1454  
5 A' 1406 1382   -26 A'   1408  
6 A' 1148 1128   -111 A'   1239  
7 A' 947 931   -60 A'   991  
8 A' 817 803   -35 A'   838  
9 A' 537 528   -99 A'   627  
10 A' 323 318   -28 A'   346  
11 A" 3076 3023   33 A"   2991  
12 A" 1449 1424   -15 A"   1438  
13 A" 1124 1104   -38 A"   1143  
14 A" 362 356    A"      
15 A" 154 151   -35 A"   186  
The calculated vibrational frequencies were scaled by 0.9828

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.