return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Comparisons > Vibrations > Vibrations

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

B3LYP/LANL2DZ

18 11 26 13 55
Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency Scaled
Frequency
Harm.
diff
Fund.
diff
Symmetry Harmonic
Frequency
Fundamental
Frequency
Comment
1 A 2066 1986           
2 A 1987 1910           
3 A 1977 1900           
4 A 1972 1896           
5 A 1972 1896           
6 A 662 636           
7 A 641 616           
8 A 641 616           
9 A 551 530           
10 A 529 509           
11 A 529 508           
12 A 498 479           
13 A 489 470           
14 A 489 470           
15 A 443 426           
16 A 420 403           
17 A 371 357           
18 A 371 357           
19 A 366 352           
20 A 337 324           
21 A 115 110           
22 A 115 110           
23 A 113 109           
24 A 109 104           
25 A 86 82           
26 A 86 82           
27 A 50i 48i           
The calculated vibrational frequencies were scaled by 0.9612

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.
See section Calculated; Vibrations; Scale Factors; Scale factor uncertainty for information on where the above scaling factor is from.