The organic-inorganic hybrid complex with formula [（CuL）2Cu3（μ-1,1-N3）4（ClO4）2], complex 1, {CuL, [5,6：14,l5-dibenzo-1,4,8,12-tetraazacyclopentadeca-7,3-diene-2,3-dione（2-）]copper（Ⅱ）}, has been synthesize...The organic-inorganic hybrid complex with formula [（CuL）2Cu3（μ-1,1-N3）4（ClO4）2], complex 1, {CuL, [5,6：14,l5-dibenzo-1,4,8,12-tetraazacyclopentadeca-7,3-diene-2,3-dione（2-）]copper（Ⅱ）}, has been synthesized and structurally determined. The crystals of complex 1 crystallize in the triclinic system with space group P1, a=0.92983（12） nm, b=1.09644（14） nm, c=1.27396（16） nm, α=70.782（2）°β=86.266（2）°,γ=78.284（2）°. In this complex, the five copper ions are bridged by macrocyclic oxamide groups and azido. Furthermore, C-H…O hydrogen bond interactions link the pentanuclear fragments to form a 2D supramolecular architecture.展开更多
Five polynuclear monovalent and mixed-valence complexes of copper with 2-thiouracil were synthesized. They were characterized by the molar conductivity, electromc spectra, infrared spectroscopy, thermogravimetric and ...Five polynuclear monovalent and mixed-valence complexes of copper with 2-thiouracil were synthesized. They were characterized by the molar conductivity, electromc spectra, infrared spectroscopy, thermogravimetric and magnetic susceptibility measurements. Their coordination properties and tentative structures were discussed.展开更多
The synthesis, structure and characterization of a new one-dimensional cyanide-bridgedcomplex [Ni(pn)_2Ni(CN)4]n'nH2O (where pn = 1,2-diaminopropane) are described. The structure ofthis complex consists of a one-d...The synthesis, structure and characterization of a new one-dimensional cyanide-bridgedcomplex [Ni(pn)_2Ni(CN)4]n'nH2O (where pn = 1,2-diaminopropane) are described. The structure ofthis complex consists of a one-dimensional polymeric chain-Ni(pn)2-NC-Ni(CN)2-CN-Ni(pn)2- inwhich the Ni(II) centers are linked by two CN groups.展开更多
A novel end-to-end azido-bridged polynuclear Schiff-base copper（II） complex, [Cu（C12H15Br2N2O）（N3）]n, was prepared and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. The c...A novel end-to-end azido-bridged polynuclear Schiff-base copper（II） complex, [Cu（C12H15Br2N2O）（N3）]n, was prepared and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. The crystal belongs to the orthorhombic system, space group Pbcn with a = 24.588（5）, b = 10.377（2）, c = 13.022（3） A, V= 3322.6（12） A^3, Z = 8, Dc = 1.874 g/cm^3, Mr = 468.65, λ（MoKa） = 0.71073 A,μ = 6.130 mm^-1, F（000） = 1832, R = 0.0637 and wR = 0.1176. The Cu atom in the complex is five-coordinated in a square pyramidal geometry by three donor atoms of the Schiff-base ligand, and two N atoms from two bridging azide ligands. The [2,4-dibromo-6-[（3-dimethylaminopropylimino）methyl]phenolato]copper（II） units are linked by the bridging azide ligands, giving zigzag polymeric chains with backbones of the [--Cu-N-N-N--Cu]n type running along the b axis.展开更多
The dinuclear Schiff base cadmium（Ⅱ） complex [Cd2（C10H15N3）2（N3）2 （μ1,1-N3）2] was prepared and characterized by elemental analysis, IR spectrum, and single-crystal X-ray dif- fraction. The crystal belongs to...The dinuclear Schiff base cadmium（Ⅱ） complex [Cd2（C10H15N3）2（N3）2 （μ1,1-N3）2] was prepared and characterized by elemental analysis, IR spectrum, and single-crystal X-ray dif- fraction. The crystal belongs to the monoclinic system, space group P21/n with a = 10.819（2）, b = 11.058（2）, c = 12.766（3）A, β = 102.456（2）°, V = 1491.3（7）A^3, Z = 2, Dc = 1.665 g/cm^3, Mr = 747.42, λ（MoKα） = 0.71073 （A）, μ = 1.470 mm^-1, F（000） = 744, R = 0.0307 and wR = 0.0584. A total of 3420 unique reflections were collected, of which 2575 with Ⅰ 〉 2σ（Ⅰ） were observed. There is a crystallographic inversion centre at the midpoint of the two metal atoms in the complex. Each CdⅡ atom in the complex is in a distorted octahedral coordination. The molecules in the crystal are linked through the intermolecular hydrogen bonds of N-H…N and C-H…N, forming a three- dimensional network.展开更多
The polynuclear complex, [La(bphsb) 2(NO 3) 3] n (bphsb=1,4 bis(phenylsulfinyl)butane) were obtained. The structure of the complex consists of ten coordinated metal ions linked up with six O atoms of the thre...The polynuclear complex, [La(bphsb) 2(NO 3) 3] n (bphsb=1,4 bis(phenylsulfinyl)butane) were obtained. The structure of the complex consists of ten coordinated metal ions linked up with six O atoms of the three bidentate nitrates and with four O atoms of the four bphsb ligands. The coordination polyhedron of the La 3+ may best be described as distorted bicapped square antiprism. The bphsb ligands act as bridges that join two neighbouring lanthanum ions to give polymeric chains. Each chain contains 18 membered macrocyclic rings with two La atoms. In the complex, the bphsb ligands adopt meso stereoisomer in which sulfur atoms are chiral, and the absolute configurations of the atoms are RS.展开更多
Three metal ion bridged self-assembled （SA） films of cis-di（thiocyanato）-bis（2,2＇-bipyridyl-4,4＇-dicarboxylate） ruthenium were fabricated and characterized by contact angle, UV spectra, cyclic voltammetry and ...Three metal ion bridged self-assembled （SA） films of cis-di（thiocyanato）-bis（2,2＇-bipyridyl-4,4＇-dicarboxylate） ruthenium were fabricated and characterized by contact angle, UV spectra, cyclic voltammetry and XPS. Their photoinduced electron transfer properties （PETP） were examined. Among the titled systems, the highest steady anodic photocurrent of 1773-1843 nA/cm^2 and the highest quantum yield of 3.2% were achieved. The effects of incident light intensity, bias voltage, and electron donor were also studied. The possible mechanism of electron transfer was proposed. The results reveal that different metal ion in SA films could affect significantly the photoinduced electron transfer property. Our experimental results clearly show that bridging metal ions can play both functional and structural roles in these self-assembled systems. This method of forming functional films can provide a new approach to regulate the property of similar systems.展开更多
基金Supported by the National Natural Science Foundation of China(No.20771083)
文摘The organic-inorganic hybrid complex with formula [（CuL）2Cu3（μ-1,1-N3）4（ClO4）2], complex 1, {CuL, [5,6：14,l5-dibenzo-1,4,8,12-tetraazacyclopentadeca-7,3-diene-2,3-dione（2-）]copper（Ⅱ）}, has been synthesized and structurally determined. The crystals of complex 1 crystallize in the triclinic system with space group P1, a=0.92983（12） nm, b=1.09644（14） nm, c=1.27396（16） nm, α=70.782（2）°β=86.266（2）°,γ=78.284（2）°. In this complex, the five copper ions are bridged by macrocyclic oxamide groups and azido. Furthermore, C-H…O hydrogen bond interactions link the pentanuclear fragments to form a 2D supramolecular architecture.
文摘Five polynuclear monovalent and mixed-valence complexes of copper with 2-thiouracil were synthesized. They were characterized by the molar conductivity, electromc spectra, infrared spectroscopy, thermogravimetric and magnetic susceptibility measurements. Their coordination properties and tentative structures were discussed.
文摘The synthesis, structure and characterization of a new one-dimensional cyanide-bridgedcomplex [Ni(pn)_2Ni(CN)4]n'nH2O (where pn = 1,2-diaminopropane) are described. The structure ofthis complex consists of a one-dimensional polymeric chain-Ni(pn)2-NC-Ni(CN)2-CN-Ni(pn)2- inwhich the Ni(II) centers are linked by two CN groups.
文摘A novel end-to-end azido-bridged polynuclear Schiff-base copper（II） complex, [Cu（C12H15Br2N2O）（N3）]n, was prepared and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. The crystal belongs to the orthorhombic system, space group Pbcn with a = 24.588（5）, b = 10.377（2）, c = 13.022（3） A, V= 3322.6（12） A^3, Z = 8, Dc = 1.874 g/cm^3, Mr = 468.65, λ（MoKa） = 0.71073 A,μ = 6.130 mm^-1, F（000） = 1832, R = 0.0637 and wR = 0.1176. The Cu atom in the complex is five-coordinated in a square pyramidal geometry by three donor atoms of the Schiff-base ligand, and two N atoms from two bridging azide ligands. The [2,4-dibromo-6-[（3-dimethylaminopropylimino）methyl]phenolato]copper（II） units are linked by the bridging azide ligands, giving zigzag polymeric chains with backbones of the [--Cu-N-N-N--Cu]n type running along the b axis.
基金Support by the Shaoxing University Research Fund
文摘The dinuclear Schiff base cadmium（Ⅱ） complex [Cd2（C10H15N3）2（N3）2 （μ1,1-N3）2] was prepared and characterized by elemental analysis, IR spectrum, and single-crystal X-ray dif- fraction. The crystal belongs to the monoclinic system, space group P21/n with a = 10.819（2）, b = 11.058（2）, c = 12.766（3）A, β = 102.456（2）°, V = 1491.3（7）A^3, Z = 2, Dc = 1.665 g/cm^3, Mr = 747.42, λ（MoKα） = 0.71073 （A）, μ = 1.470 mm^-1, F（000） = 744, R = 0.0307 and wR = 0.0584. A total of 3420 unique reflections were collected, of which 2575 with Ⅰ 〉 2σ（Ⅰ） were observed. There is a crystallographic inversion centre at the midpoint of the two metal atoms in the complex. Each CdⅡ atom in the complex is in a distorted octahedral coordination. The molecules in the crystal are linked through the intermolecular hydrogen bonds of N-H…N and C-H…N, forming a three- dimensional network.
文摘The polynuclear complex, [La(bphsb) 2(NO 3) 3] n (bphsb=1,4 bis(phenylsulfinyl)butane) were obtained. The structure of the complex consists of ten coordinated metal ions linked up with six O atoms of the three bidentate nitrates and with four O atoms of the four bphsb ligands. The coordination polyhedron of the La 3+ may best be described as distorted bicapped square antiprism. The bphsb ligands act as bridges that join two neighbouring lanthanum ions to give polymeric chains. Each chain contains 18 membered macrocyclic rings with two La atoms. In the complex, the bphsb ligands adopt meso stereoisomer in which sulfur atoms are chiral, and the absolute configurations of the atoms are RS.
基金Project supported by the National NaturaJ Science Foundation of China （Nos. 20471009, 20573010）, the Scientific Research Foundation for the Returned 0verseas Chinese Scholars, State Education Ministry, Excellent Young Scholars Research Fund of Beijing Institute of Technology （No. 000Y07-30）.
文摘Three metal ion bridged self-assembled （SA） films of cis-di（thiocyanato）-bis（2,2＇-bipyridyl-4,4＇-dicarboxylate） ruthenium were fabricated and characterized by contact angle, UV spectra, cyclic voltammetry and XPS. Their photoinduced electron transfer properties （PETP） were examined. Among the titled systems, the highest steady anodic photocurrent of 1773-1843 nA/cm^2 and the highest quantum yield of 3.2% were achieved. The effects of incident light intensity, bias voltage, and electron donor were also studied. The possible mechanism of electron transfer was proposed. The results reveal that different metal ion in SA films could affect significantly the photoinduced electron transfer property. Our experimental results clearly show that bridging metal ions can play both functional and structural roles in these self-assembled systems. This method of forming functional films can provide a new approach to regulate the property of similar systems.
