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

Compare vibrational frequencies in CCCBDB for Fe(CO)5 (Iron pentacarbonyl)

HF/CEP-31G

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 2044 -77 A1' 2121  
2 A 1983 -59 A1' 2042  
3 A 1890 1447 A1' 443  
4 A 1833 1419 A1' 413  
5 A 1829 1446 A2' 383  
6 A 495 -1539 A2" 2034  
7 A 491 -128 A2" 619  
8 A 491 62 A2" 429  
9 A 485 385 A2" 100  
10 A 443 -1570 E' 2013  
11 A 443 -1571 E' 2013  
12 A 360 -285 E' 645  
13 A 344 -301 E' 645  
14 A 343 -199 E' 543  
15 A 342 -200 E' 543  
16 A 323 -151 E' 474  
17 A 322 -152 E' 474  
18 A 275 170 E' 105  
19 A 249 144 E' 105  
20 A 212 138 E' 74  
21 A 98 24 E' 74  
22 A 95 -393 E" 488  
23 A 95 -393 E" 488  
24 A 93 -282 E" 375  
25 A 74 -301 E" 375  
26 A 73 -24 E" 97  
27 A 29 -68 E" 97  
The calculated vibrational frequencies were scaled by 0.9014

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.