Abstract
The new ligand 5-(1,8-naphthalimido)isophthalate (L1352–), containing two carboxylate donor groups and the 1,8-naphthalimide supramolecular tecton, has been used under solvothermal conditions to prepare a series of group 2, lanthanide, and actinide metal complexes: [Ca4(L135)4(H2O)8]·(H2O)9.5(DMF)2.6 (1), Ba(L135)(H2O)1.5(DMF)0.5 (2), La2(L135)3(DMF)4 (3), Ce2(L135)3(DMF)4 (4), Eu2(L135)3(DMF)4 (5), Tb2(L135)3(DMF)4 (6), [UO2(L135)(DMF)]·(py)0.5(EtOH)0.5 (7), and Th(L135)(NO3)2(DMF)2]·(DMF)2 (8). The solid state structure of the calcium complex 1 is based on helical rod-shaped secondary building-units (SBUs) of edge-shared polyhedra bridged by oxygen atoms from the carboxylate groups. The crystals are racemic, with the one-dimensional (1D) helical rods organized by π···π stacking interactions of the naphthalimide group into a three-dimensional (3D) supramolecular metal-organic framework (SMOF) structure. Although the structure of the barium complex 2 also contains rod-shaped SBUs, the rods are linked thro...
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