return to home page

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

Compare vibrational frequencies in CCCBDB for C3F8 (perfluoropropane)

B1B95/3-21G*

Frequency in cm-1
  Calculated   Experimental
Mode Number Symmetry Frequency diff Symmetry Frequency Comment
1 A1 1299 -71 A1 1370 renumbered
2 A1 1289 27 A1 1262 renumbered
3 A1 1134 -20 A1 1155 renumbered
4 A1 718 -63 A1 781 renumbered
5 A1 627 -38 A1 665 renumbered
6 A1 490 -57 A1 547 renumbered
7 A1 360 -23 A1 383 renumbered
8 A1 327 9 A1 318 renumbered
9 A1 215 64 A1 151 renumbered
10 A2 1227        
11 A2 513 -24 A2 537 renumbered
12 A2 313 -34 A2 347 renumbered
13 A2 194 -82 A2 276 renumbered
14 A2 32i        
15 B1 1271 3 B1 1268 renumbered, B1 and B2 switched
16 B1 1176 22 B1 1155 renumbered, B1 and B2 switched
17 B1 572 -46 B1 618 renumbered, B1 and B2 switched
18 B1 453 -8 B1 461 renumbered, B1 and B2 switched
19 B1 260 41 B1 219 renumbered, B1 and B2 switched
20 B1 101   B1   renumbered, B1 and B2 switched
21 B2 1291 -59 B2 1350 renumbered, B1 and B2 switched
22 B2 1204 -6 B2 1210 renumbered, B1 and B2 switched
23 B2 981 -27 B2 1008 renumbered, B1 and B2 switched
24 B2 655 -76 B2 731 renumbered, B1 and B2 switched
25 B2 483 -54 B2 537 renumbered, B1 and B2 switched
26 B2 313 -24 B2 337 renumbered, B1 and B2 switched
27 B2 230 -46 B2 276 renumbered, B1 and B2 switched
The calculated vibrational frequencies were scaled by 0.9549

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.