A new nanometer material,nanometer AlO(OH)loaded on the fiberglass with activated carbon fibersfelt(ACF)as the carrier,was prepared by hydrolytic reaction for the removal of Cd(II)from aqueous solution usingcolumn ads...A new nanometer material,nanometer AlO(OH)loaded on the fiberglass with activated carbon fibersfelt(ACF)as the carrier,was prepared by hydrolytic reaction for the removal of Cd(II)from aqueous solution usingcolumn adsorption experiment.As was confirmed by XRD determination,the hydrolysis production loaded on fi-berglass was similar to the orthorhombic phase AlO(OH).SEM images showed that AlO(OH)particles were in theform of small aggregated clusters.The Thomas model was applied for estimating the kinetic parameters and thesaturated adsorption ability of Cd(II)adsorption on the new adsorbent.The results showed that the maximum ad-sorption capacity of Cd(II)was 128.50 mg·g-1and 117.86 mg·g-1for the adsorbent mass of 0.3289 g and the ad-sorbent mass of 0.2867 g,respectively.The elution experiment result indicated that the adsorbed Cd ions was easilydesorbed from the material with 0.1 mol·L-1HCl solution.Adsorption-desorption cycles showed the feasibility ofrepeated uses of the composited material.The adsorption capacities were influenced by pH and the initial Cd(II)concentration.The amount adsorbed was greatest at pH 6.5 and the initial Cd(II)concentration of 0.07 mg·L-1,re-spectively.Nanometer AlO(OH)played a major role in the adsorption process,whereas the fiberglass and ACFwere assistants in the process of removing Cd(II).In addition,the adsorption capacities for Cd(II)were obviouslyreduced from 128.50 mg·g-1to 64.28 mg·g-1when Pb ions were present because Pb ions took up more adsorption sites.展开更多
The uptake kinetics of platinum(II)complexes of 1,2 -diaminocyclohexane(dach)isomers(1R,2R-dach, 1R,2S-dach. 1S,2S-dach) with various leaving groups, Chloride(CI), oxalate (OX),squaric acid(SA), and demethylcantharic ...The uptake kinetics of platinum(II)complexes of 1,2 -diaminocyclohexane(dach)isomers(1R,2R-dach, 1R,2S-dach. 1S,2S-dach) with various leaving groups, Chloride(CI), oxalate (OX),squaric acid(SA), and demethylcantharic acid (DA) was studied in the plasma isotonic buffer. The experimentalresults show that across-membrane transport of all the platinum complexes studied follows a firstorder Kinetic process and a passive diffustion mechanism. The uptake rate constants of these platinum(II)complexes decrease in the following sequence with the k value(h-1):CI>SA>OX>DA. It isnoteworthy that the k values of the platinum(II)complexes with same leaving group reduce as: 1R,2R-dach>1R,2S-dach>1S,2S-dach. Based on these results, it is firstly suggested that the erythocytemembrane recognizes the chirality of these platinum complexes.展开更多
A complex polymer [Cu2(oxen)(pic)(H20)]n(Clo4)·2nHH2O, there oxen and pic are N.N' -bis(2aminoethyt )oxamide and Pyridine-4-carboxytate, respectivety, was synthesized. It crystallizes in the monoctinic space ...A complex polymer [Cu2(oxen)(pic)(H20)]n(Clo4)·2nHH2O, there oxen and pic are N.N' -bis(2aminoethyt )oxamide and Pyridine-4-carboxytate, respectivety, was synthesized. It crystallizes in the monoctinic space group P21/c, with a=10.420(2) A. b=13. 118(2) A, c=14 .863(5) A. β=93.05(2)°, and z=4. The structure of this complex consists of 2D network of copper(II) ions bridged by bis-tridentate oxen in transconformation, and by pyridine-4-carboxylate in which the pyridine ring acts as a monodentate group whereas the carboxylate as a tridentate group and bonds to three different copper centres in a novel fashion. The repeating asymmetric unit is a binuclear copper(II) fragment with one of the copper centre locating in a lengthening octahedrat environment, whereas the other in a distorted tetragonal pyramid geometry.展开更多
The copper (II) complex (1) of a new Iigand 4- (quinolin-8-ylmethyl)- 1, 4, 7. 10-tetraazacycoltridecane-11. 13-dione (L) has been syntehsized and its crystal structure determined. It is of orthorhomic crystal system ...The copper (II) complex (1) of a new Iigand 4- (quinolin-8-ylmethyl)- 1, 4, 7. 10-tetraazacycoltridecane-11. 13-dione (L) has been syntehsized and its crystal structure determined. It is of orthorhomic crystal system and Pcad space group with a=16.260 (3), b=7. 739 (2). c=27. 530 (9) A, Mr=416. 97, Z=8. Dx=1. 595 g/cm3,μ=12. 876 cm-1, and F(000)=1736. The final R factor is 0. 061 for 2594 observed reflections with I>3σ(I). The Cu .atom is five coordinated to form a distorted square pyramid geometry in which N(11) of the pendant is at apical site.展开更多
At room temperature,dibenzoyl peroxide undergoes oxidative addition on metallic Copper Powder and 2-aminopyridine in a solvent(acetone and tetrahydrofuran), which affords the product as a binuclear Cu(II)complex [Cu (...At room temperature,dibenzoyl peroxide undergoes oxidative addition on metallic Copper Powder and 2-aminopyridine in a solvent(acetone and tetrahydrofuran), which affords the product as a binuclear Cu(II)complex [Cu (C5 H5 COO)2(C5 H5 N2)]2. (C4 H5 O)2. The structure of the complex was characterized by elemental analyses. IR spectra, TG-DTA. The structure of the compound has been solved by direct method and Fourier synthesis, and refined by block-diagonal and full matrix least-squares method to a final R of 0.04329 for 3671 independent reflection of I>e(I). The crystals are triclinic, C46H45N4O10Cu2.Z=1, Mr=943.93, space group P-1, with cell parameters, a=10.806(1); b=11.169(3);c=11.729(2)A; α=71.99(2),β=89.38(1)°; γ=81.37(1); V=1330.1A3; Dc=1.172g.cm-3;μ=8.5cm-1. The copper(II) ion is coordinated by four bridging bidentate benzoate and two 2-aminopyridine to form dimeric molecules.展开更多
The synthesis is and crystal structure are reported for the sheet-like compourd [CU2(oxpn)Fe(CN )5(NO)]. there oxpn is the dianion of M, M'-bis(3-aminopropyl)oxamide. This compound crustallizes in the orthogonal s...The synthesis is and crystal structure are reported for the sheet-like compourd [CU2(oxpn)Fe(CN )5(NO)]. there oxpn is the dianion of M, M'-bis(3-aminopropyl)oxamide. This compound crustallizes in the orthogonal space group Puma. with a=11 .413(4), b=22.242(5), c=7.736(2) A, and Z=4.The structure was refined to conventionat discrepancy factors R=0.047 and Pw=0.054. The Cu(II ) and Fe(III)centers are bridged by oxpn and cyanide, the formal behaves as a his-terdentate tigand bound to cooper(II)ion to form (II) dimers. whereas the latter bridges Cu(II) and Fe(III) centers in both symmetric and asymetric end- to-end bis-monodentate fashions, spreading out along be plane to form a 20 network. The Structure is made up of CuFe unit with Cu(II) and Fe(III) ions locating in a distorted square-based pyramid and a compressed octahedron, respectively.展开更多
The mimeses of peroxidase by Mn(II)-TETA complex in catalytic luminol H2O2 chemiluminescence and L-Tyr-H2O2 fluorescence reactions were etudied The chemiluminescence and spectrofluorimetric methods of determination of...The mimeses of peroxidase by Mn(II)-TETA complex in catalytic luminol H2O2 chemiluminescence and L-Tyr-H2O2 fluorescence reactions were etudied The chemiluminescence and spectrofluorimetric methods of determination of H2O2 and glucose in human serum have been developed. The Michaelis-Menten constant K and maximum rate Vmax were measured.展开更多
文摘A new nanometer material,nanometer AlO(OH)loaded on the fiberglass with activated carbon fibersfelt(ACF)as the carrier,was prepared by hydrolytic reaction for the removal of Cd(II)from aqueous solution usingcolumn adsorption experiment.As was confirmed by XRD determination,the hydrolysis production loaded on fi-berglass was similar to the orthorhombic phase AlO(OH).SEM images showed that AlO(OH)particles were in theform of small aggregated clusters.The Thomas model was applied for estimating the kinetic parameters and thesaturated adsorption ability of Cd(II)adsorption on the new adsorbent.The results showed that the maximum ad-sorption capacity of Cd(II)was 128.50 mg·g-1and 117.86 mg·g-1for the adsorbent mass of 0.3289 g and the ad-sorbent mass of 0.2867 g,respectively.The elution experiment result indicated that the adsorbed Cd ions was easilydesorbed from the material with 0.1 mol·L-1HCl solution.Adsorption-desorption cycles showed the feasibility ofrepeated uses of the composited material.The adsorption capacities were influenced by pH and the initial Cd(II)concentration.The amount adsorbed was greatest at pH 6.5 and the initial Cd(II)concentration of 0.07 mg·L-1,re-spectively.Nanometer AlO(OH)played a major role in the adsorption process,whereas the fiberglass and ACFwere assistants in the process of removing Cd(II).In addition,the adsorption capacities for Cd(II)were obviouslyreduced from 128.50 mg·g-1to 64.28 mg·g-1when Pb ions were present because Pb ions took up more adsorption sites.
基金Supported by the National Natural Science Foundation of China（20576052） the Joint Innovation Fund of Jiangsu Province（BY2009107） the National Basic Research Program of China（2003CB615707）
文摘三稳定的 4 代用品基于 pyridine 的钌(II ) 建筑群[RuCl2 (PPh3 ) L ](L = 4-R-2,6-bis (diethylaminomethylene ) pyridine， R = Br， H 或 allyloxy ) 被综合。向到酉同类的从白酒的转移加氢的建筑群的催化活动被调查。在 pyridyl 戒指的帕拉取代者的电子效果被探查，我们发现捐赠电子的组增加了催化活动。结果建议一个捐赠电子的组为连接象 carbosilane dendrimer 那样的催化的钌建筑群和化学上惰性的支持分子可能是优先的。
文摘The uptake kinetics of platinum(II)complexes of 1,2 -diaminocyclohexane(dach)isomers(1R,2R-dach, 1R,2S-dach. 1S,2S-dach) with various leaving groups, Chloride(CI), oxalate (OX),squaric acid(SA), and demethylcantharic acid (DA) was studied in the plasma isotonic buffer. The experimentalresults show that across-membrane transport of all the platinum complexes studied follows a firstorder Kinetic process and a passive diffustion mechanism. The uptake rate constants of these platinum(II)complexes decrease in the following sequence with the k value(h-1):CI>SA>OX>DA. It isnoteworthy that the k values of the platinum(II)complexes with same leaving group reduce as: 1R,2R-dach>1R,2S-dach>1S,2S-dach. Based on these results, it is firstly suggested that the erythocytemembrane recognizes the chirality of these platinum complexes.
文摘A complex polymer [Cu2(oxen)(pic)(H20)]n(Clo4)·2nHH2O, there oxen and pic are N.N' -bis(2aminoethyt )oxamide and Pyridine-4-carboxytate, respectivety, was synthesized. It crystallizes in the monoctinic space group P21/c, with a=10.420(2) A. b=13. 118(2) A, c=14 .863(5) A. β=93.05(2)°, and z=4. The structure of this complex consists of 2D network of copper(II) ions bridged by bis-tridentate oxen in transconformation, and by pyridine-4-carboxylate in which the pyridine ring acts as a monodentate group whereas the carboxylate as a tridentate group and bonds to three different copper centres in a novel fashion. The repeating asymmetric unit is a binuclear copper(II) fragment with one of the copper centre locating in a lengthening octahedrat environment, whereas the other in a distorted tetragonal pyramid geometry.
文摘The copper (II) complex (1) of a new Iigand 4- (quinolin-8-ylmethyl)- 1, 4, 7. 10-tetraazacycoltridecane-11. 13-dione (L) has been syntehsized and its crystal structure determined. It is of orthorhomic crystal system and Pcad space group with a=16.260 (3), b=7. 739 (2). c=27. 530 (9) A, Mr=416. 97, Z=8. Dx=1. 595 g/cm3,μ=12. 876 cm-1, and F(000)=1736. The final R factor is 0. 061 for 2594 observed reflections with I>3σ(I). The Cu .atom is five coordinated to form a distorted square pyramid geometry in which N(11) of the pendant is at apical site.
文摘At room temperature,dibenzoyl peroxide undergoes oxidative addition on metallic Copper Powder and 2-aminopyridine in a solvent(acetone and tetrahydrofuran), which affords the product as a binuclear Cu(II)complex [Cu (C5 H5 COO)2(C5 H5 N2)]2. (C4 H5 O)2. The structure of the complex was characterized by elemental analyses. IR spectra, TG-DTA. The structure of the compound has been solved by direct method and Fourier synthesis, and refined by block-diagonal and full matrix least-squares method to a final R of 0.04329 for 3671 independent reflection of I>e(I). The crystals are triclinic, C46H45N4O10Cu2.Z=1, Mr=943.93, space group P-1, with cell parameters, a=10.806(1); b=11.169(3);c=11.729(2)A; α=71.99(2),β=89.38(1)°; γ=81.37(1); V=1330.1A3; Dc=1.172g.cm-3;μ=8.5cm-1. The copper(II) ion is coordinated by four bridging bidentate benzoate and two 2-aminopyridine to form dimeric molecules.
文摘The synthesis is and crystal structure are reported for the sheet-like compourd [CU2(oxpn)Fe(CN )5(NO)]. there oxpn is the dianion of M, M'-bis(3-aminopropyl)oxamide. This compound crustallizes in the orthogonal space group Puma. with a=11 .413(4), b=22.242(5), c=7.736(2) A, and Z=4.The structure was refined to conventionat discrepancy factors R=0.047 and Pw=0.054. The Cu(II ) and Fe(III)centers are bridged by oxpn and cyanide, the formal behaves as a his-terdentate tigand bound to cooper(II)ion to form (II) dimers. whereas the latter bridges Cu(II) and Fe(III) centers in both symmetric and asymetric end- to-end bis-monodentate fashions, spreading out along be plane to form a 20 network. The Structure is made up of CuFe unit with Cu(II) and Fe(III) ions locating in a distorted square-based pyramid and a compressed octahedron, respectively.
文摘The mimeses of peroxidase by Mn(II)-TETA complex in catalytic luminol H2O2 chemiluminescence and L-Tyr-H2O2 fluorescence reactions were etudied The chemiluminescence and spectrofluorimetric methods of determination of H2O2 and glucose in human serum have been developed. The Michaelis-Menten constant K and maximum rate Vmax were measured.
