Do particles (e.g. atoms/electrons) in large molecules that rotate experience pseudoforces?

Imagine if you have a molecule with a large size, e.g. proteins. Anything that rotates experiences pseudoforces if my understanding is correct (e.g. coriolis, centrifugal etc).

Since every molecule rotates, does this have any effect on these molecules that we could measure? Or properties that arise because of these pseudoforces? My guess would be more smeared out electron clouds, or weaker covalent bonds or something. Or a clustering of more heavy atoms in the centre point since farther from the centre would mean weaker bonds.

My guess could also be that the effect is so small that it is negligble. Probably only really big molecules that spin very fast could have an effect (if any).

• remember that molecules have to be described quantum mechanically. see link.springer.com/chapter/10.1007/978-3-642-32381-2_3 Commented Aug 12, 2023 at 8:54
• Centrifugal forces have well-described effects on the vibrational spectra of the smallest (that is, diatomic) molecules, actually. en.wikipedia.org/wiki/…
– Buzz
Commented Aug 12, 2023 at 16:59
• Even in atoms as small as hydrogen any state with $\ell>0$ has a term $\propto r^{-2}$ in the co-rotating frame's potential energy, which corresponds to centrifugal force. Commented Aug 12, 2023 at 17:05
• Buzz you actually made me feel a little silly because you’re absolutely right; there is a very “simple case” example of this phenomenon. I basically gave the “shoot an ant with a bazooka” answer! But even in the diatomic case the centrifugal distortion terms are usually very small, which fits in my broader claims. Thanks for the easier working example! Commented Aug 12, 2023 at 22:01

In any case, one could get an expectation for how significant these effects are by solving the Schroedinger equation for the time-dependent potential \begin{align} V = \frac{e^2}{|\vec{r} - b\hat{x}\cos(\omega t) - b\hat{y}\sin(\omega t)|} + \frac{e^2}{|\vec{r} + b\hat{x}\cos(\omega t) + b\hat{y}\sin(\omega t)|} \end{align} for a diatomic molecule of radius $$b$$. This is not going to be solvable analytically but it should be within reach of simulations.