Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA an...Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA and single-crystal X-ray crystallography. It crystallizes in orthorhombic space group P21212 with a = 17.6640（16）, b = 18.6750（16）, c = 16.0625（14） A, V = 5298.6（8） A3, Z = 4, Mr = 994.70, Dc = 1.247 g/cm3, F（000） = 2116,μ = 0.469 mm^-1, GOOF = 1.073, the final R = 0.0499 and wR = 0.1395 for 11816 observed reflections with 1 〉 2or（/）. In the title compound, the basic building unit consists of two mononuclear Cu（salan） which orient in opposite directions and are locked together via weak intermolecular C-H...π interactions. The adjacent building units are further directed into a 2D supramolecular network structure via H bonds, between which reside the guest acetonitrile and water molecules. In addition, the presence of exposed NH-functionalities and coordination unsaturated Cu centers in 1 provide a great chance to recognize tartaric acids through CD titration in solution.展开更多
A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2...A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2·4 H2 O under solvothermal conditions. The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, powder X-ray diffraction(PXRD) and thermogravimetric analyses(TGA). Single-crystal X-ray diffraction analyses reveal that complex 1 consists of a 3 D network with one-dimensional(1 D) channels. Moreover, 1 exhibits strong luminescent emission in solid state at room temperature. Fluorescence quenching was observed when treating complex 1 with picric acid(PA), 2,4-dinitrophenylhydrazine(2,4-DNPH) and p-nitroaniline(p-NA), revealing that the as-synthesized complex could be used as a luminescence sensor for the detection of PA, 2,4-DNPH and p-NA.展开更多
基金supported by NSFC-21025103 and 20971085"973" Programs (2007CB209701 and 2009CB930403)+1 种基金Shanghai Science and Technology Committee (10DJ1400100)the Key Project of State Education Ministry
文摘Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA and single-crystal X-ray crystallography. It crystallizes in orthorhombic space group P21212 with a = 17.6640（16）, b = 18.6750（16）, c = 16.0625（14） A, V = 5298.6（8） A3, Z = 4, Mr = 994.70, Dc = 1.247 g/cm3, F（000） = 2116,μ = 0.469 mm^-1, GOOF = 1.073, the final R = 0.0499 and wR = 0.1395 for 11816 observed reflections with 1 〉 2or（/）. In the title compound, the basic building unit consists of two mononuclear Cu（salan） which orient in opposite directions and are locked together via weak intermolecular C-H...π interactions. The adjacent building units are further directed into a 2D supramolecular network structure via H bonds, between which reside the guest acetonitrile and water molecules. In addition, the presence of exposed NH-functionalities and coordination unsaturated Cu centers in 1 provide a great chance to recognize tartaric acids through CD titration in solution.
基金supported by the Natural Science Foundation of Shaanxi Province(2018JQ2079,2018JQ2040,2018JM2055)
文摘A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2·4 H2 O under solvothermal conditions. The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, powder X-ray diffraction(PXRD) and thermogravimetric analyses(TGA). Single-crystal X-ray diffraction analyses reveal that complex 1 consists of a 3 D network with one-dimensional(1 D) channels. Moreover, 1 exhibits strong luminescent emission in solid state at room temperature. Fluorescence quenching was observed when treating complex 1 with picric acid(PA), 2,4-dinitrophenylhydrazine(2,4-DNPH) and p-nitroaniline(p-NA), revealing that the as-synthesized complex could be used as a luminescence sensor for the detection of PA, 2,4-DNPH and p-NA.
