Unravelling Coriolis temperature-dependent effects on doped helium clusters: Vib-rotational Raman spectra of (3,4He)4-Cl2(X)

► We show the vib-rotational Raman spectra of chlorine in doped 3He and 4He clusters. ► We apply the Full-Configuration-Interaction Nuclear-Orbital approach to probe Coriolis effects for the first time. ► The spectra in 4He are unaffected by Coriolis couplings. ► The spectra in 3He are much more complex, highlighting a strong temperature-dependence. ► Spin-dependent Coriolis couplings play a key role in 3He.