Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology | |
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You are here: Calculated > Vibrations > Bad Calculations > Bad vib. Calc. vs exp. OR Resources > Bad Calculations > Vibrations > Bad vib. Calc. vs exp. |
Calculated frequencies that differ from experiment by more than 400 cm-1 or have a ratio with experiment outside of 0.7 to 1.2 are listed
Calculated vibrational frequencies ("theory" in table) are calculated at
MP3/aug-cc-pCVTZ
Calculated values were scaled by 1.
Species | Name | mode | int rot | Symmetry | Experiment | Theory | difference | ratio |
---|---|---|---|---|---|---|---|---|
NS | Mononitrogen monosulfide | 1 | Σ | 1204 | 1654 | 450 | 0.728 | |
SiC2 | Silicon dicarbide | 3 | B2 | 196 | -71 | -268 | -2.748 | |
OPCl | Phosphorus oxychloride | 2 | A' | 308 | 515 | 207 | 0.598 | |
OPCl | Phosphorus oxychloride | 3 | A' | 492 | 320 | -172 | 1.540 |