欢迎登录材料期刊网

材料期刊网

高级检索

合成了Eu(Ⅲ)配合物[Eu2(bbimp)(CH3COO)(CH3CH2O)2(CH3CH2OH)](ClO4)2 (A), 产物经IR谱、UV 谱、1H NMR谱、摩尔电导、元素分析对其结构进行了基本鉴定. 用紫外光谱法研究了磷酸二酯键模型物双-(2, 4-二硝基苯基)磷酸盐BDNPP与配合物A在pH 7.26, 25和37 ℃时, [BDNPP]=[A]=2.5×10-5 mol*L-1时的动力学性质, 得到 BDNPP的二级水解速率常数为k25 ℃=3.027×103(mol*L-1)-1*min-1, k37 ℃=6.060×103(mol*L-1)-1*min-1, 半衰期t1/2分别为12.9和6.6 min,使BDNPP的水解速率大大提高.

参考文献

[1] Strater N;Lipsomb W N;Klablunder T et al.Two-metalioncatalysisinenzymaticacyl-andphosphoryl-transferreactions[J].Angewandte Chemie International Edition,1995,35:2024.
[2] Wilcox D .Binuclear Metallohydrolases[J].Chemical Reviews,1996,96:2435.
[3] Willian H;Chaoma J R;Breslow R .Selective hydrolysis of phosphate esters,nitrophenyl phosohates and UPU,by dimeric zinc complexes depends on the spacer length[J].Journal of the American Chemical Society,1995,117:562.
[4] Wall M;Rosemary C H;Chin J .Double lewis acid activation in phosphate diester cleavage[J].Angewandte Chemie International Edition,1993,32(11):1633.
[5] Schnaithl M T;Hansong S;Lawrence Q Jr .Double-stranded cleavage of PBR322 by a diion complex via a "hydrolytic"mechanism[J].Proceedings of the National Academy of Sciences of the United States of America,1994,91:569.
[6] Ragunathan K G;Schneider H J .Binuclear lanthanide complexes as catalysts for the hydrolysis of bis(P-nitrophenyl)-phosphate and double-stranded DNA[J].Angewandte Chemie International Edition,1996(35):1219.
[7] 朱兵,赵大庆,倪嘉缵.稀土及其配合物对核酸的断裂作用[J].化学进展,1998(04):395-404.
[8] Mark E B;Adrianne K T;Lawrence Q JR et al.Double-strand hydrolysis of plasmid by dicerium complexes at 37 ℃[J].Journal of the American Chemical Society,2001,123:1898.
[9] Hilde P B;Douglasw S .Towards copper(Ⅱ) hemocyanin models: the synthesis and molecular structure of a binuclear Copper(Ⅱ) complex of a heptadentate ligand[J].Inorganica Chimica Acta,1985,99:L53.
[10] Hilde P B;Douglasw S .Towards Copper(Ⅱ) hemocyanin models: synthesis and characterization of a binuclear copper(Ⅱ) complex of a heptadentate ligand[J].Inorganic Chemistry,1987(26):749.
[11] Suzuki M;Kanatomi H;Murase I .Dinuclear Cobalt(Ⅱ) complexes with various ligands and their dioxgen complexes[J].Bulletin of the Chemical Society of Japan,1984(57):36.
[12] Geary W J .The Use of conductivity measurements in organic solvents for the characterisation of coordination compounds[J].Coordination Chemistry Reviews,1971,7:81.
[13] Deacon G B;Phillips R J .Relationships between the carbon-oxygen stretching frequencies of carboxylato complexes and the type of carboxylate coordination[J].Coordination Chemistry Reviews,1980,33:227.
[14] Rapta M;Kamaras P;Brewer G A et al.Coordination modes of water-derived bridging ligands in diiron(Ⅲ) complexes: stablization of an oxo-hydroxo bridge by hydrogen bonding[J].Journal of the American Chemical Society,1995,117:12865.
[15] Young MJ.;Hynes RC.;Chin J.;Wahnon D. .REACTIVITY OF COPPER(II) HYDROXIDES AND COPPER(IP) ALKOXIDES FOR CLEAVING AN ACTIVATED PHOSPHATE DIESTER[J].Journal of the American Chemical Society,1995(37):9441-9447.
[16] Browne K A;Bruice T C .Chemistry of phosphodiesters,DNA and models.2.The hydrolysis of bis (8-hydroxyquinoLine) phosphate in the absence and presence of metal ions[J].Journal of the American Chemical Society,1992(114):4951.
[17] Belle C;Gautier-Luneau I;Pierre J et al.A phenoxo-brigged diferric complex with two different coordination numbers in two distinct coordination sites[J].Inorganic Chemistry,1996,35:3706.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%