Figure reports a sketch of the respective structures and the appearance of the red crystals of (R-ClMBA)2SnI4. and (S-ClMBA)2SnI4, crystallize into the triclinic P1 chiral space group, while the racemic form in the centro-symmetric orthorhombic Pnma. ClMBA ligand introduces a further reduction of symmetry compared to MBA, where the chiral (R-MBA)2SnI4 and (S-MBA)2SnI4 crystallize in the orthorhombic P212121 space group. The octahedra of (R-ClMBA)2SnI4 and (S-ClMBA)2SnI4 are distorted, presenting six different bond lengths and an in-plane Sn-I-Sn angle significantly lower than the ideal value of 180° (around 155°). Such effects are closely related to the hydrogen bond formation and the penetration of the protonated amine group. The level of octahedral distortion has been quantified in terms of the octahedral quadratic elongation (λoct), and their bond angle variance (σoct 2 ), as defined by Robison et al., as well as by calculating the distortion index, D. The respective values for these parameters are reported in Table of SI for (R-ClMBA)2SnI4, (S-ClMBA)2SnI4, and (rac-ClMBA)2SnI4. While the quadratic elongation shows a slight difference among the three perovskites, the racemic compound is characterized by a higher value of both the bond angle variance and the distortion index.