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
MP2/cc-pV(D+d)Z
Calculated values were scaled by 1.
Species | Name | mode | int rot | Symmetry | Experiment | Theory | difference | ratio |
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PO | Phosphorus monoxide | 1 | Σ | 1220 | 4392 | 3172 | 0.278 | |
OPCl | Phosphorus oxychloride | 2 | A' | 308 | 499 | 191 | 0.617 | |
OPCl | Phosphorus oxychloride | 3 | A' | 492 | 303 | -189 | 1.623 | |
SNO | Nitrogen oxide sulfide | 3 | A' | 792 | 553 | -239 | 1.433 |