Spectrophotometry usually has a high sensitivity in determining the complexation of TAPP with metal ions. Therefore, as an excellent color-producing reagent, TAPP has already been used for the spectrophotometric deter...Spectrophotometry usually has a high sensitivity in determining the complexation of TAPP with metal ions. Therefore, as an excellent color-producing reagent, TAPP has already been used for the spectrophotometric determination of trace amounts of mercury (Ⅱ), cobalt (Ⅱ), manganese(Ⅱ), zinc (Ⅱ) and cadmium (Ⅱ)etc..展开更多
The title compound,α,α,β,β-5,10,15,20-tetrakis（2-aminophenyl）porphyrin, has been obtained and characterized by single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c wit...The title compound,α,α,β,β-5,10,15,20-tetrakis（2-aminophenyl）porphyrin, has been obtained and characterized by single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a = 31.804（6）, b = 19.314（4）, c = 12.872（3） A, β= 90.592（3）°, Z = 4, V = 7907（3） A^3, Dc= 1.193 g/cm^3, Mr= 1419.67, λ（MoKα） = 0.71073A, μ= 0.073 mm^-1, F（000） = 2984, R = 0.0773 and wR = 0.2045. The crystallographic analysis indicates the existence of N-H...π intermolecular interactions and hydrogen bonds which link the complex molecules into a 3D network structure.展开更多
6-Deoxy- 6-iodo-β-cyclodextrin (1) reacted with 5-(p-aminophenyl)-10, 15,20-triphenyl porphyrin(2), 5-(p-aminophenyl)-10,15,20-triphenyl nickel(Ⅱ) porphyrin [NiⅡTPPNH2P](3),5-(p-aminophenyl)-10,15,20-triphenyl mang...6-Deoxy- 6-iodo-β-cyclodextrin (1) reacted with 5-(p-aminophenyl)-10, 15,20-triphenyl porphyrin(2), 5-(p-aminophenyl)-10,15,20-triphenyl nickel(Ⅱ) porphyrin [NiⅡTPPNH2P](3),5-(p-aminophenyl)-10,15,20-triphenyl manganese(Ⅲ) porphyrin [MnⅢTPPNH2P] (4) and 5-(p-aminophenyl)-10,l5,20-triphenyl carbonyl ruthenium porphyrin [RuⅡ (CO)TPPNH2P] (5) to generate the compounds 6-9, respectively. Those new compound 5-9 have been identified by 1H NMR, IR, MS and UV-visible spectra and elemental analysis.展开更多
Synthesis of a novel octopus porphyrin with polyglycol chains 1a was achieved. The catalytic activity of la's manganese complex for the epoxidation of cholesterol derivatives with PhIO give a satisfactory conversi...Synthesis of a novel octopus porphyrin with polyglycol chains 1a was achieved. The catalytic activity of la's manganese complex for the epoxidation of cholesterol derivatives with PhIO give a satisfactory conversion and regioselectivity.展开更多
The interaction of p-cyclodextrin (β-CD) and the modified cyclodextrins, hydroxy propyl-p-cyclodextrin (HP-β-CD), sulfobutylether-β-cyclodextrin (SBE-β-CD) and synthesized meso-tetrakis(4-N-ethylpyridiniurmyl)porp...The interaction of p-cyclodextrin (β-CD) and the modified cyclodextrins, hydroxy propyl-p-cyclodextrin (HP-β-CD), sulfobutylether-β-cyclodextrin (SBE-β-CD) and synthesized meso-tetrakis(4-N-ethylpyridiniurmyl)porphyrin (TEPyP) in aqueous solution has been studied by spectroscopic methods systematically. A significant change in fluorescence and absorption properties has been observed in the presence of β-CD, HP-β-CD and SBE-β-CD. The stoichiometry and formation constants have been determined by the steady-state fluorescence technique. The results showed that the β-CD derivatives were prior to the native β-CD and the hydrogen bonding and static electric forces played important roles in the formation of the inclusion complexes. The conformation was further confirmed by NMR spectroscopy.展开更多
在采用区域选择性硝化方法合成β-硝基-5,10,15,20-四芳基卟啉铜、镍配合物的过程中,发现并通过核磁等方法分析了5,10,15,20-四(2-甲氧基苯基)卟啉及其相应β-硝基取代物的阻旋异构现象。图谱分析表明,与其结构类似的5,10,15,20-四(2-...在采用区域选择性硝化方法合成β-硝基-5,10,15,20-四芳基卟啉铜、镍配合物的过程中,发现并通过核磁等方法分析了5,10,15,20-四(2-甲氧基苯基)卟啉及其相应β-硝基取代物的阻旋异构现象。图谱分析表明,与其结构类似的5,10,15,20-四(2-羟基苯基)卟啉及5,10,15,20-四(4-甲氧基苯基)卟啉系列化合物没有该阻旋异构现象,说明邻位甲氧基阻碍了苯环与芳环之间C-C单键的旋转。进一步通过Chemdraw 3D Ultra软件能量最小化计算,讨论了阻转异构体可能的方式。展开更多
基金Supported by the National Natural Science Foundation of China
文摘Spectrophotometry usually has a high sensitivity in determining the complexation of TAPP with metal ions. Therefore, as an excellent color-producing reagent, TAPP has already been used for the spectrophotometric determination of trace amounts of mercury (Ⅱ), cobalt (Ⅱ), manganese(Ⅱ), zinc (Ⅱ) and cadmium (Ⅱ)etc..
基金the National Natural Science Foundation of China(No.20671053)
文摘The title compound,α,α,β,β-5,10,15,20-tetrakis（2-aminophenyl）porphyrin, has been obtained and characterized by single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a = 31.804（6）, b = 19.314（4）, c = 12.872（3） A, β= 90.592（3）°, Z = 4, V = 7907（3） A^3, Dc= 1.193 g/cm^3, Mr= 1419.67, λ（MoKα） = 0.71073A, μ= 0.073 mm^-1, F（000） = 2984, R = 0.0773 and wR = 0.2045. The crystallographic analysis indicates the existence of N-H...π intermolecular interactions and hydrogen bonds which link the complex molecules into a 3D network structure.
文摘6-Deoxy- 6-iodo-β-cyclodextrin (1) reacted with 5-(p-aminophenyl)-10, 15,20-triphenyl porphyrin(2), 5-(p-aminophenyl)-10,15,20-triphenyl nickel(Ⅱ) porphyrin [NiⅡTPPNH2P](3),5-(p-aminophenyl)-10,15,20-triphenyl manganese(Ⅲ) porphyrin [MnⅢTPPNH2P] (4) and 5-(p-aminophenyl)-10,l5,20-triphenyl carbonyl ruthenium porphyrin [RuⅡ (CO)TPPNH2P] (5) to generate the compounds 6-9, respectively. Those new compound 5-9 have been identified by 1H NMR, IR, MS and UV-visible spectra and elemental analysis.
文摘Synthesis of a novel octopus porphyrin with polyglycol chains 1a was achieved. The catalytic activity of la's manganese complex for the epoxidation of cholesterol derivatives with PhIO give a satisfactory conversion and regioselectivity.
文摘The interaction of p-cyclodextrin (β-CD) and the modified cyclodextrins, hydroxy propyl-p-cyclodextrin (HP-β-CD), sulfobutylether-β-cyclodextrin (SBE-β-CD) and synthesized meso-tetrakis(4-N-ethylpyridiniurmyl)porphyrin (TEPyP) in aqueous solution has been studied by spectroscopic methods systematically. A significant change in fluorescence and absorption properties has been observed in the presence of β-CD, HP-β-CD and SBE-β-CD. The stoichiometry and formation constants have been determined by the steady-state fluorescence technique. The results showed that the β-CD derivatives were prior to the native β-CD and the hydrogen bonding and static electric forces played important roles in the formation of the inclusion complexes. The conformation was further confirmed by NMR spectroscopy.
文摘在采用区域选择性硝化方法合成β-硝基-5,10,15,20-四芳基卟啉铜、镍配合物的过程中,发现并通过核磁等方法分析了5,10,15,20-四(2-甲氧基苯基)卟啉及其相应β-硝基取代物的阻旋异构现象。图谱分析表明,与其结构类似的5,10,15,20-四(2-羟基苯基)卟啉及5,10,15,20-四(4-甲氧基苯基)卟啉系列化合物没有该阻旋异构现象,说明邻位甲氧基阻碍了苯环与芳环之间C-C单键的旋转。进一步通过Chemdraw 3D Ultra软件能量最小化计算,讨论了阻转异构体可能的方式。
