A new terbium(III) metal-organic framework [Tb(HL)(H2O)](Tb L) based on a new synthetic ligand 9-(2,6-dicarboxy-pyridin-4-yl)-9 H-carbazole-3,6-dicarboxylic acid(H4 L) has been synthesized under solvothermal condition...A new terbium(III) metal-organic framework [Tb(HL)(H2O)](Tb L) based on a new synthetic ligand 9-(2,6-dicarboxy-pyridin-4-yl)-9 H-carbazole-3,6-dicarboxylic acid(H4 L) has been synthesized under solvothermal conditions. Its structure was determined by single-crystal X-ray diffraction analysis, and further characterized by powder X-ray diffraction analysis and IR spectra. The title complex crystallizes in trigonal space group P3212 with a = b = 13.6491(11), c = 32.345(3) ?, γ = 120°, V = 5218.5(10) ?~3, C(42)H(20)N4O(17)Tb2, Mr = 1170.46, Dc = 1.117 g/cm^3, μ(Mo Kα) = 2.065 mm^(-1), F(000) = 1698, GOF = 1.054, Z = 3, the final R = 0.0384 and wR = 0.0771 for 5223 observed reflections(I > 2s(I)). In Tb L, the tri-bridged binuclear Tb2 units are bibridged by two carbazole-3,6-dicarboxylate moieties to lead to the homochiral parallel arranged helical chains, which are further connected by 2,6-pyridinedicarboxylate moieties to produce the chiral neutral 3 D framework. There are there kinds of 1 D channels in the framework with the channel space occupying 53.3% of the total volume. TbL exhibits intense characteristic green emission of Tb^(3+) ions.展开更多
基金supported by the National Natural Science Foundation of China(21973047)。
文摘A new terbium(III) metal-organic framework [Tb(HL)(H2O)](Tb L) based on a new synthetic ligand 9-(2,6-dicarboxy-pyridin-4-yl)-9 H-carbazole-3,6-dicarboxylic acid(H4 L) has been synthesized under solvothermal conditions. Its structure was determined by single-crystal X-ray diffraction analysis, and further characterized by powder X-ray diffraction analysis and IR spectra. The title complex crystallizes in trigonal space group P3212 with a = b = 13.6491(11), c = 32.345(3) ?, γ = 120°, V = 5218.5(10) ?~3, C(42)H(20)N4O(17)Tb2, Mr = 1170.46, Dc = 1.117 g/cm^3, μ(Mo Kα) = 2.065 mm^(-1), F(000) = 1698, GOF = 1.054, Z = 3, the final R = 0.0384 and wR = 0.0771 for 5223 observed reflections(I > 2s(I)). In Tb L, the tri-bridged binuclear Tb2 units are bibridged by two carbazole-3,6-dicarboxylate moieties to lead to the homochiral parallel arranged helical chains, which are further connected by 2,6-pyridinedicarboxylate moieties to produce the chiral neutral 3 D framework. There are there kinds of 1 D channels in the framework with the channel space occupying 53.3% of the total volume. TbL exhibits intense characteristic green emission of Tb^(3+) ions.
