Powder X-ray diffraction studies were conducted and the obtained diffractograms were compared to those of PCN-224 and the analogous MOF based on the corresponding Ni(II) complex of TCPP (Ni(II)TCPP). In both of these reference cases, the structure is cubic and belongs to the space group Im-3m (no. 229). Half of the edges of the Zr6-clusters forming the nodes are bridged by carboxylates from the TCPP ligands and the TCPP linker vacancies appearing in an ordered 3D checkerboard fashion (Fig. ). To mimic the Pt(II) metalated MOF prepared here, the Ni(II) in the literature structure was changed for Pt(II). Fig. shows that for both model systems Ni(II)PCN-224 and such a hypothetical Pt(II)PCN-224 the relative intensities of all peaks agree well with the relative intensities determined in the experiment. By comparing peak positions and relative intensities between the measured data and the data calculated for the literature structure (Fig. for Pt(II)PCN-224 and ESI) it is concluded that the synthesized MOF exhibits the same structure as the PCN-224 family reported by Feng et al. It is to note, that the published structures of PCN-221 (disordered variant of PCN-224) and MOF-525 (all edges of the Zr6 cluster linked with TCPP derivatives) exhibit at scattering angles below 15° very similar patterns to that of PCN-224. However, only PCN-224 features the superstructure reflections observed at scattering angles of 3.2 and 5.5° so that the occurrence of ordered vacancies in the crystals discussed here is prevailing.