To conclude, all the complexes presented herein were characterized by an octahedral configuration of the aluminum center (see Table ). The dipyrrin cores were relatively planar and the substituents were twisted out of its plane between 30-98° indicating that the groups to the phenyl ring play a significant role in the final configuration. Chelates 13b, 13h, 13i and 13j displayed the largest tilt of the meso-aryl ring versus the dipyrrin. The largest variation in this twist angle was found for 13h where two 2,4,5-trimethoxyphenyl moieties were almost perpendicular to the dipyrrin, while one showed a 63° angle. 13i and 13j had almost orthogonal configuration of the dipyrrin and the substituent. On the other hand, 13f showed the smallest distortion. A similar trend of the dihedral angles was found for the DIPY precursors: 12f (53°) < 12a (68°) < 12g (83°) < 12h (93°). The Al-N bonds were in the range of 1.97-2.02 Å (ca. 2 Å), which is similar with the rhodium and gallium analogues but is slightly longer than the cobalt analogues and shorter than the indium analogues. Finally, looking at the crystal packing and specifically that of 13d, 16 and 20, we can observe that the carboxylic acid and the fluorine groups play a role in the crystal structure giving a packing with voids and prominent porous networks.