Interestingly, this correlation does not hold for the present chiral 2D perovskites where the Δβin parameter is even greater for the racemic sample (not presenting any spin-splitting). It should be noted, however, that the model proposed in ref. 43 refers only to lead-based 2D perovskites. The present results, being the first where the Rashba parameter has been calculated for a Sn-containing 2D chiral perovskite, further point out the strong need to further widen the number and type of chiral perovskites available. Many open questions still hold, such as the role of spin-orbit coupling related to the nature of the metal ion, the role of local and average inversion symmetry breaking on the emergence of Rashba splitting, the influence of hydrogen bonding, etc. The present paper, while reporting novel chiral lead-free perovskites with one of the lowest band gaps to date, has also highlighted the strong need for further materials chemistry efforts in order to provide solid and reliable structure-property correlations in these appealing materials to pave the way for an effective materials design.