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

Compare vibrational frequencies in CCCBDB for Zn(CH3)2 (dimethyl zinc)

LSDA/6-31G(2df,p)

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1' 2931 31 A1' 2900  
2 A1' 1156 -1 A1' 1157  
3 A1' 578 75 A1' 503  
4 A1" 36   A1"   torsion
5 A2" 2930 15 A2" 2915  
6 A2" 1158 -25 A2" 1183  
7 A2" 652 39 A2" 613  
8 E' 3017 51 E' 2966  
9 E' 1356 52 E' 1304  
10 E' 696 -8 E' 704  
11 E' 103 -31 E' 134  
12 E" 3018 175 E" 2843  
13 E" 1349 -85 E" 1434  
14 E" 580 -40 E" 620  
The calculated vibrational frequencies were scaled by 0.984

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.