Two series of lanthanide compounds, namely, chlorides containing different numbers of both 1,10-phenanthroline (Phen) mole- cules and chloride anions in the first coordination sphere, and Schiff Bases (SBs) derived from Pyridoxal (PL) and amino acids, were charac- terized by single crystal X-ray diffraction and luminescence techniques. The combined use of these techniques for the analysis of long-distance europium non-covalent interactions was performed for the first time. As a result, the correlation between supramolecular or- ganization and the features of the EuIII electronic transitions was found for the compounds of the first series. Strong non-covalent interactions between pyridoxal rings of SBs (the second series of compound) led to the formation of 1:2 species and four-dentate coordination function of these SBs in aqueous solution. Two series of lanthanide compounds, namely, chlorides containing different numbers of both 1,10-phenanthroline (Phen) mole- cules and chloride anions in the first coordination sphere, and Schiff Bases (SBs) derived from Pyridoxal (PL) and amino acids, The combined use of these techniques for the analysis of long-distance europium non-covalent interactions was performed for the first time. As a result, the correlation between supramolecular or- ganization and the features of the EuIII electronic transitions was found for the compounds of the first series. Strong non-covalent interactions between pyridoxal rings of SBs (the second series of compound) led to the formation of 1: 2 species and four-dentate coordination function of these SBs in aqueous solution.