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

Compare vibrational frequencies in CCCBDB for B2H6 (Diborane)

PBEPBE/6-31G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 Ag 2553 29 Ag 2524  
2 Ag 2139 35 Ag 2104  
3 Ag 1145 -35 Ag 1180  
4 Ag 783 -11 Ag 794  
5 Au 821 -12 Au 833 B1 and B2 switched from experimental
6 B1g 2632 41 B1g 2591 B1 and B2 switched from experimental
7 B1g 904 -11 B1g 915 B1 and B2 switched from experimental
8 B1u 1994 79 B1u 1915 B1 and B2 switched from experimental
9 B1u 949 -24 B1u 973 B1 and B2 switched from experimental
10 B2g 1827 59 B2g 1768 B1 and B2 switched from experimental
11 B2g 866 16 B2g 850 B1 and B2 switched from experimental
12 B2u 2645 33 B2u 2612 B1 and B2 switched from experimental
13 B2u 883 -67 B2u 950 B1 and B2 switched from experimental
14 B2u 298 -70 B2u 368  
15 B3g 965 -47 B3g 1012  
16 B3u 2541 16 B3u 2525  
17 B3u 1666 64 B3u 1602  
18 B3u 1143 -34 B3u 1177  
The calculated vibrational frequencies were scaled by 0.9857

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.