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

Compare vibrational frequencies in CCCBDB for AsH3+ (Arsine cation)

CCD/3-21G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 2187        
2 A1 658 206 A1 452  
3 E 2249        
4 E 884        
The calculated vibrational frequencies were scaled by 0.9565

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.