Abstract
The title metal-organic framework, [Tb2(MFDA)3(DMF)2(H2O)3] · (H2O)3(DMF)6} n (I) (H2MFDA = 9,9-dimethylfluorene-2,7-dicarboxylic acid, DMF = N,N-dimethylformamide), has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction (CIF file CCDC no. 995892). Complex I crystallizes in triclinic space group \(P\bar 1\) with a = 13.0022(3), b = 13.3793(3), c = 25.8929(4) Å, α = 84.060(2)°, β = 88.104(2)°, γ = 66.361(2)°, V = 4104.05(15) Å3, C75H104N8O26Tb2, M = 1851.50, ρ c = 1.498 g/cm3, μ(MoK α) = 1.790 mm−1, F(000) = 1896, GOF = 1.055, Z = 2, the final R 1 = 0.0522 and wR 2 = 0.1380 for I > 2σ(I). In MOF I, the Tb2 dinuclear units double-bridged by two carboxylate groups are connected together by MFDA ligands to give rise to a 3D architecture that consists in two types of 1D open channels along the y axis with about 6 × 8 and 9 × 12 Å2 dimensions. The solvent accessible space for the desolvated I is 53.4% of the total volume. The 3D structure can also be rationalized as a six-connected (3.411.52.6) topological network by considering the Tb2 dinuclear units as six-connected nodes and MFDA ligands as linkers, respectively.
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Li, A., Li, L., Yang, T. et al. A three-dimensional porous metal-organic framework based on 9,9-dimethylfluorene-2,7-dicarboxylic acid (H2MFDA): {[Tb2(MFDA)3(DMF)2(H2O)3] · (H2O)3(DMF)6} n . Russ J Coord Chem 40, 837–841 (2014). https://doi.org/10.1134/S1070328414110037
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DOI: https://doi.org/10.1134/S1070328414110037