File Name : figure_s1.png Caption : front (left) and top (right) views of the nci topology for the system: 4^....2cl^– from the: (a) b97d3/def2–tzvp; and (b) b3lyp/svp, computational approach. atoms color: h = silver; c = black; n = blue; and cl = green. mep surfaces for the complex 4^....2cl^– obtained from the: (c) b97d3/def2–tzvp; and (d) b3lyp/svp, computational approach. the isovalue used to represent the mep surfaces is equal to 0.050 a.u, while that the values of the scale (red – blue a.u.) are: 0.100 – 0.250 a.u. File Name : figure_s2.png Caption : topological map containing the bond paths (continuous or dashed lines connecting the cores) and bond critical points (light green points) for the structure 4^....2cl^– using the: (a) b97d3/def2–tzvp; and (b) b3lyp/svp, computational model. atoms color: h = white; c = gray; n = blue; and cl = light green. File Name : figure_s3.png Caption : front (left) and top (right) views of the nci topology for the systems: (1, 2b, 3 and 5)^....2cl^–. atoms color: h = silver; b = yellow; c = black; n = blue; f = pink; and cl = green. File Name : figure_s4.png Caption : front (left) and top (right) views of the nci topology for the systems: (6, 7, 8 and 9)^....2cl^–. atoms color: h = silver; c = black; n = blue; o = red; f = pink; and cl = green. File Name : figure_s5.png Caption : front (left) and top (right) views of the nci topology for the systems: (10, 13, 14 and 15)^....2cl^–. atoms color: h = silver; c = black; n = blue; o = red; f = pink; and cl = green. File Name : figure_s6.png Caption : front (left) and top (right) views of the nci topology for the system: 16^....2cl^–. atoms color: h = silver; c = black; n = blue; o = red; and cl = green. File Name : figure_s7.png Caption : mep surfaces for the complexes analyzed in this study. the isovalue used to represent the surfaces is equal to 0.050 a.u, while that the values of the scales (red – blue a.u.) are: (6, 7 and 9)^....2cl^– (0.100 – 0.250 a.u.); 10^....2cl^– (0.150 – 0.300 a.u.); 11^....2cl^– (0.200 – 0.350 a.u.); (14 and 15)^....2cl^– (–0.100 – 0.100 a.u.); and 16^....2cl^– (0.050 – 0.150 a.u.). File Name : figure_s8.png Caption : topological map containing the bond paths (continuous or dashed lines connecting the cores) and bond critical points (light green points) for the structures (5–11)^....2cl^–. atoms color: h = white; c = gray; n = blue; o = red; f = green; and cl = light green. File Name : figure_s9.png Caption : topological map containing the bond paths (continuous or dashed lines connecting the cores) and bond critical points (light green points) for the structures (13–16)^....2cl^–. atoms color: h = white; c = gray; n = blue; o = red; f = green; and cl = light green.