Journal
CRYSTAL GROWTH & DESIGN
Volume 10, Issue 8, Pages 3489-3495Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg1003403
Keywords
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Funding
- Natural Science Foundation of China [20671041, 20701015, 20788101]
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Three novel metal-organic frameworks (MOFs), vertical bar(C3H7NO)(2)(H2O)vertical bar[Zn-3(C10H5N3O4)(3)(C3H7NO)(2)] (1), vertical bar(H2O)(5)(H3O)(NO3)vertical bar[Nd-2(C10H5N3O4)(3)(H2O)(4)] (2), and vertical bar(H2O)(2)vertical bar[Nd-3(C10H5N3O4)(3)(C10H4N3O4)] (3), based on the T-shaped tripodal ligands 2-(pyridine-4-yl)-1H-4,5-imidazoledicarboxylic acid and 2-(pyridine-3-yl)-1H-4,5-imidazoledicarboxylic acid (H(3)PyImDC), have been constructed under solvo-Thydrothermal conditions. The diverse coordination modes of H(3)PyImDC ligands have afforded the assembly of three novel compounds. In compound 1, two oxygen atoms and three nitrogen atoms of the H(3)PyImDC ligand, a T-shaped linker, coordinate to two zinc centers to form a novel bbm net with two distinct channels along the [100] and [001] directions. In compound 2, H(3)PyIm DC ligands coordinate to neodymium centers to form a ladder-like chain which then interacts with a water molecules chain via hydrogen-bondings to construct a 3D supermolecular structure. In compound 3, H(3)PyImDC ligands, a T-shaped linker, coordinate to neodymium centers to form a (3,6)-connected net with an ant topology. In compounds 1-3, the two H(3)PyImDC ligands exhibit different coordination modes with zinc and neodymium centers, which afforded the expected structural diversity. Additionally, all three compounds exhibit strong fluorescence emissions in the solid state at room temperature.
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