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

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

B2PLYP/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 34 -2866 A1' 2900  
2 A1' 2913 1756 A1' 1157  
3 A1' 1246 743 A1' 503  
4 A1' 508   A1"   torsion
5 A2 2911 -4 A2" 2915  
6 A2 1242 59 A2" 1183  
7 A2 605 -8 A2" 613  
8 E 2979 13 E' 2966  
9 E 1419 115 E' 1304  
10 E 617 -87 E' 704  
11 E' 2979 2845 E' 134  
12 E' 1422 -1421 E" 2843  
13 E' 722 -712 E" 1434  
14 E' 117 -503 E" 620  
The calculated vibrational frequencies were scaled by 0.9492

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.