The conversion electron spectrum of the 22.5 keV M1 + E2 nuclear transition in Sm-149 from the electron capture decay of Eu-149 was experimentally studied for the "Eu2O3" and "EuF3" compounds in which Eu-149 ions have the same assumed oxidation number +3. While the energies of the L, M, N, O, and P-1 conversion lines for "EuF3" were lower, on average, by 1.7(1), 2.7(2), 2.3(3), 4.1(2), and 5.7(9) eV, respectively, than those for "Eu2O3", no changes between the two ligand complexes were observed for relative intensities of the conversion lines and their natural widths within the error limits.