| 초록 |
One of the most widely used synthetic approaches is the utilization of the molecular symmetry principle to assemble multiple ligands and metallic centers in a preferred manner. Variation of metal ions can be helpful to understand the importance of symmetry for the generation of hierarchical molecular platforms. The synthesis and characterization of isostructural supramolecular helicates, [M8(PDA)6(AIP)3(DMF)6-x(H2O)x] (M=Ni (1), Co (2), and Mn (3); PDA=2,6-pyridinedicarboxylate; AIP=5-aminoisophthalate; x=0 for 1, and x=4 for 2 and 3) are reported. Despite the disparity in the ionic radii and distinct coordination-geometry preferences of Co2+, Ni2+, and Mn2+, all metals engaged in the assembly with the heteroleptic ligands in the same manner to form isostructural supramolecular helicates. In addition, 1, 2, and 3 can be used as supramolecular modules for the construction of higher-order polymeric structures. |
