The title complex,[Pb4（1,2-bdc）4（L）2]·2.25H2O 1（L = 2-（2-chloro-6-fluorophen-yl）-1H-imidazo[4,5-f][1,10]phenanthroline,1,2-H2bdc = 1,2-benzenedicarboxylic acid）,has been obtained by using hydrothermal syn...The title complex,[Pb4（1,2-bdc）4（L）2]·2.25H2O 1（L = 2-（2-chloro-6-fluorophen-yl）-1H-imidazo[4,5-f][1,10]phenanthroline,1,2-H2bdc = 1,2-benzenedicarboxylic acid）,has been obtained by using hydrothermal synthesis and characterized by elemental analysis,IR and single-crystal X-ray diffraction.It crystallizes in monoclinic,space group P21/c with a = 12.0920（6）,b = 18.9248（10）,c = 15.2729（8） ,β = 98.7530（10）°,V = 3454.3（3） 3,Z = 1,C140H90Cl4F4N16O41Pb8,Mr = 4527.60,Dc = 2.176 g/cm3,F（000） = 2130,μ（MoKa） = 9.884 mm-1,R = 0.0241 and wR = 0.0582.Compound 1 exhibits a unique tetra-nuclear structure,and is further stacked by π-π interactions to give a two-dimensional supramolecular layer.The N-H···O and O-H···O hydrogen bonds stabilize the structure of 1.展开更多
The sulfonate derivate of chrysin coordinates with Ca2+ to form a novel tetra-nuclear calcium complex [(Ca(C15H8O7S)(H2O)(DMSO)3(Ca(C15H8O7S)(DMSO)2]·4DMSO. The structure of the complex is characterized by IR,1H ...The sulfonate derivate of chrysin coordinates with Ca2+ to form a novel tetra-nuclear calcium complex [(Ca(C15H8O7S)(H2O)(DMSO)3(Ca(C15H8O7S)(DMSO)2]·4DMSO. The structure of the complex is characterized by IR,1H NMR and X-ray single-crystal diffraction analysis. The results show that the complex crystallizes in triclinic, space group Pī, cell parametera = 1.4725(6) nm,b = 1.6480(7) nm,c = 2.1006(8) nm, α = 83.928(7)°, β= 85.938(7)°, γ= 85.212(7)°,V = 5.041(3) nm3,Dc = 1.476 g/cm3,Z = 2, μ=0.568 nm?1,F(000) = 2324,R = 0.0778,wR = 0.1821. In the complex, four Ca2+ which are bridged by four 5-hydroxyanion-7-dihydro-xyfla-vone-6-sulfonate ligands with their carbonyl and 5-hydroxyanion group build an approximate square. The coordination number of Ca2+ is 7 and the coordinated atoms are all oxygen from the carbonyl, hydroxyl and suflo-group of 5-hydroxyanion-7-hydroxyflavone-6-sulfonate, H2O and DMSO. Four ligands locate on two sides of the square. Two of them on the same side are almost paralleled and aromatic п-п stacking exists between them. Ligands on the opposite side are nearly perpendicular to each other. Meanwhile, the solid of title compound has the photoluminescent phenomenon. The title compound emits green fluorescence (λem = 520 nm) when it is excited at the wavelength of 410 nm and its photoluminescent mechanism is discussed.展开更多
A novel tetra-nuclear Nd(Ⅲ) coordination polymer, Nd4(μ3-OH)4(μ2-H2O)2(C6H4NO2)6(N3)2(H2O)2(1, C6H4N zide anion), was successfully prepared under hydrothermal conditions and fully characterized by C, H and N elemen...A novel tetra-nuclear Nd(Ⅲ) coordination polymer, Nd4(μ3-OH)4(μ2-H2O)2(C6H4NO2)6(N3)2(H2O)2(1, C6H4N zide anion), was successfully prepared under hydrothermal conditions and fully characterized by C, H and N elemental analysis, IR spectrum, thermal stability and single-crystal X-ray diffraction. It crystallizes in the triclinic system, space group P1, with Z = 1, a = 8.188(3), b = 12.516(5), c = 12.573(5) ?, α = 107.887(1)°, β = 104.681(2)°, γ = 98.086(6)°, V = 1152.2(8) ?3, M3 r = 1533.73, Dc = 2.210 g/cm, λ = 0.71073 ?, μ = 4.524 mm-1, F(000) = 736, R = 0.0332 and wR = 0.0901 for 3954 observed reflections with Ⅰ > 2σ(Ⅰ) and S = 1.071. The molecular structure of polymer 1 is constructed by four Nd3+ cations, four bridging μ3-OH- anions, two bridging μ2-H2 O, six C6 H4 NO2- anions, two linear azide anions and two coordinated water molecules. The structure of polymer 1 can be viewed as a 3-D supra-molecular network constructed by O-H···O and O-H···N hydrogen bonds between the adjacent chains. Moreover, its near-infrared luminescence and luminescence quenching for Cu2+ cation have also been investigated in detail.展开更多
文摘The title complex,[Pb4（1,2-bdc）4（L）2]·2.25H2O 1（L = 2-（2-chloro-6-fluorophen-yl）-1H-imidazo[4,5-f][1,10]phenanthroline,1,2-H2bdc = 1,2-benzenedicarboxylic acid）,has been obtained by using hydrothermal synthesis and characterized by elemental analysis,IR and single-crystal X-ray diffraction.It crystallizes in monoclinic,space group P21/c with a = 12.0920（6）,b = 18.9248（10）,c = 15.2729（8） ,β = 98.7530（10）°,V = 3454.3（3） 3,Z = 1,C140H90Cl4F4N16O41Pb8,Mr = 4527.60,Dc = 2.176 g/cm3,F（000） = 2130,μ（MoKa） = 9.884 mm-1,R = 0.0241 and wR = 0.0582.Compound 1 exhibits a unique tetra-nuclear structure,and is further stacked by π-π interactions to give a two-dimensional supramolecular layer.The N-H···O and O-H···O hydrogen bonds stabilize the structure of 1.
基金This work was supported by the Natural Science Foundation of Shaanxi Province(Grant No.2001K11-G5).
文摘The sulfonate derivate of chrysin coordinates with Ca2+ to form a novel tetra-nuclear calcium complex [(Ca(C15H8O7S)(H2O)(DMSO)3(Ca(C15H8O7S)(DMSO)2]·4DMSO. The structure of the complex is characterized by IR,1H NMR and X-ray single-crystal diffraction analysis. The results show that the complex crystallizes in triclinic, space group Pī, cell parametera = 1.4725(6) nm,b = 1.6480(7) nm,c = 2.1006(8) nm, α = 83.928(7)°, β= 85.938(7)°, γ= 85.212(7)°,V = 5.041(3) nm3,Dc = 1.476 g/cm3,Z = 2, μ=0.568 nm?1,F(000) = 2324,R = 0.0778,wR = 0.1821. In the complex, four Ca2+ which are bridged by four 5-hydroxyanion-7-dihydro-xyfla-vone-6-sulfonate ligands with their carbonyl and 5-hydroxyanion group build an approximate square. The coordination number of Ca2+ is 7 and the coordinated atoms are all oxygen from the carbonyl, hydroxyl and suflo-group of 5-hydroxyanion-7-hydroxyflavone-6-sulfonate, H2O and DMSO. Four ligands locate on two sides of the square. Two of them on the same side are almost paralleled and aromatic п-п stacking exists between them. Ligands on the opposite side are nearly perpendicular to each other. Meanwhile, the solid of title compound has the photoluminescent phenomenon. The title compound emits green fluorescence (λem = 520 nm) when it is excited at the wavelength of 410 nm and its photoluminescent mechanism is discussed.
基金Project supported by the National Natural Science Foundation of China (No. 21601095)。
文摘A novel tetra-nuclear Nd(Ⅲ) coordination polymer, Nd4(μ3-OH)4(μ2-H2O)2(C6H4NO2)6(N3)2(H2O)2(1, C6H4N zide anion), was successfully prepared under hydrothermal conditions and fully characterized by C, H and N elemental analysis, IR spectrum, thermal stability and single-crystal X-ray diffraction. It crystallizes in the triclinic system, space group P1, with Z = 1, a = 8.188(3), b = 12.516(5), c = 12.573(5) ?, α = 107.887(1)°, β = 104.681(2)°, γ = 98.086(6)°, V = 1152.2(8) ?3, M3 r = 1533.73, Dc = 2.210 g/cm, λ = 0.71073 ?, μ = 4.524 mm-1, F(000) = 736, R = 0.0332 and wR = 0.0901 for 3954 observed reflections with Ⅰ > 2σ(Ⅰ) and S = 1.071. The molecular structure of polymer 1 is constructed by four Nd3+ cations, four bridging μ3-OH- anions, two bridging μ2-H2 O, six C6 H4 NO2- anions, two linear azide anions and two coordinated water molecules. The structure of polymer 1 can be viewed as a 3-D supra-molecular network constructed by O-H···O and O-H···N hydrogen bonds between the adjacent chains. Moreover, its near-infrared luminescence and luminescence quenching for Cu2+ cation have also been investigated in detail.
