[TheOrganic]

In computational approaches, we apply frequency calculations to get gibbs free energy.
How does gibbs free energy correlate with vibrational frequency? Can anyone explain in very, simple (if possible intuitive) approach?

Thanks.

[Enthalpy]

Each vibration mode stores energy: kT when this vastly exceeds the energy quantum hF, less if not (usual case).
This energy is included in U and S, hence influences U+PV-TS.