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

Compare vibrational frequencies in CCCBDB for C5H8 (1,4-Pentadiene)

HF/6-31+G**

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A 3064 -16 A 3080 A1
2 A 2998 -14 A 3012 A1
3 A 2985 -27 A 3012 A1
4 A 2874 -26 A 2900 A1
5 A 1677 33 A 1644 A1
6 A 1452 19 A 1433 A1
7 A 1420 7 A 1413 A1
8 A 1292 -3 A 1295 A1
9 A 1236 -27 A 1263 A2
10 A 1069 -51 A 1120 A1
11 A 1015 20 A 995 A2
12 A 970 52 A 918 A2
13 A 889 13 A 876 A1
14 A 660 98 A 562 A2
15 A 363 -58 A 421 A1
16 A 289 152 A 137 A2
17 A 88 -14 A 102 A1
18 A 3064 -16 B 3080 B1
19 B 2997 -15 B 3012 B1
20 A 2985 -27 B 3012 B1
21 B 2910 -72 B 2982 B2
22 A 1669 29 B 1640 B1
23 B 1430 17 B 1413 B1
24 A 1307 -7 B 1314 B1
25 B 1283 3 B 1280 B1
26 A 1146 86 B 1060 B1
27 B 1025 30 B 995 B1
28 A 970 -25 B 995 B2
29 B 936 16 B 920 B2
30 A 879 119 B 760 B2
31 B 605 -116 B 721 B2
32 A 439 18 B 421 B1
33 B 99 -232 B 331 B2
The calculated vibrational frequencies were scaled by 0.9042

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.