Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Calculated Frequencies for C₈H₁₄ (Bicyclo[2.2.2]octane) ¹A₁^' D_3h

HF/6-31G ¹A₁^' D3H

Unscaled Zero Point Vibrational Energy (zpe) 48723 cm^-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 43992 cm^-1

See section Calculated; Vibrations; Scale Factors; Set scaling factors to change the scale factors used here.
See section Calculated; Vibrations; Scale Factors; Calculate a scale factor to determine the least squares best scaling factor.

Vibrational frequencies for multiple conformations are available

List of Irreducible Representations for D₃