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IV.C.1. (XIII.D.1.)

Compare vibrational frequencies in CCCBDB for ONONO (Nitrosyl nitrite)

MP2=FULL/3-21G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 1153 -587 A1 1740  
2 A1 841 -133 A1 974  
3 A1 374 -21 A1 395  
4 A1 187        
5 A2 193 -17 A2 210  
6 B1 109 -31 B1 140  
7 B2 1110 -587 B2 1697  
8 B2 564 -141 B2 705  
9 B2 416 36 B2 380  
The calculated vibrational frequencies were scaled by 0.948

See section XIII.C.3 List or set vibrational scaling factors to change the scale factors used here.
See section III.B.3.c Calculate a vibrational scaling factor for a set of molecules to determine the least squares best scaling factor.
See section III.B.3.b List of vibrational scaling factors and their uncertainties for information on where the above scaling factor is from.