We further extended the present investigation by exploring the role of central atom nature on the properties of DA2GeBr4 and DA2GeI4. For this purpose, we replaced Ge with Sn and Pb thus preparing the following four additional 2D perovskites: DA2SnBr4, DA2PbBr4, DA2SnI4, and DA2PbI4. Among these samples, only DA2PbI4 has been previously reported in ref. 19 where, however, the sole structure from single-crystal diffraction was documented, without any detail about optical properties. 20 The RT XRD data for the samples (in a reduced angular range to better highlight the differences) are reported in Figure for the bromide series (left panel) and for the iodide series (right panel). As for the previous samples, the patterns are dominated by the (00l) and the two reflections shown in Figure correspond to the (004) and (006) peaks of the orthorhombic symmetry providing information on the c-axis trend. Within each series, it is possible to observe a very slight shift of the peaks towards higher angles (smaller c-axis) from Ge to Sn and to Pb, which is opposite to the trend of the ionic radii, witnessing a possible reduction of octahedral distortion, particularly in the out of plane direction, as previously observed in other lowdimensional perovskites. On the other hand, as also observed above, all the iodide compositions have a shorter c-axis, a trend due to the change of organic spacer staggering which is in turn related to the hydrogen bonding of the protonated ammonium to the halide, showing strong reduction of this distance when moving from iodide to bromide. The corresponding absorption measurements for the two series of samples at RT are reported in Figures and. DA2SnBr4 does not emit at RT, while the other three perovskites show PL spectra with very different characteristics compared to Ge-based compounds. The PL spectra of DA2PbBr4 and DA2PbI4 are very narrow if compared to Ge-based compounds, while DA2SnI4 lays somehow in between with a structure and reasonably wide emission. The PL spectra of lead and tin containing specimens well reflect the absorption features, as they show a structured emission involving two main contributions for the lead containing samples and three components for the tin one. The structuring of the lead based 2D MHPs emission in 2 main contributions (S1 and S2) has been attributed to phonon replica of the main line. In tin based samples this band structuring could be further modified by the contribution from trap states, which will be eventually dominant for Ge based compounds, vide infra. RT decays are very fast in all the compounds measured although the tin-based sample show also a long living minority contribution, see Figure .