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Bad vibrational frequency predictions

19 02 11 15 45

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 wB97X-D/aug-cc-pV(T+d)Z
Calculated values were scaled by 1.

Species Name mode int rot Symmetry Experiment Theory difference ratio
SiH4 Silane 1 A1 2187 2755 568 0.794
SiH4 Silane 3 T2 2191 2822 631 0.776
OPCl Phosphorus oxychloride 2 A' 308 513 205 0.601
OPCl Phosphorus oxychloride 3 A' 492 315 -177 1.563