Catalytic hydrolysis of p-nitrophenyl picolinate (PNPP) by a dinuclear copper(II) complex of an octaaza di-macrocyclic ligand

被引：0

作者：

Kou, XM ^{[1
]}

Hu, Y ^{[1
]}

Tian, YH ^{[1
]}

Meng, XG ^{[1
]}

Hu, CW ^{[1
]}

Zeng, XC ^{[1
]}

机构：

[1] Sichuan Univ, Fac Chem, State Key Lab Green Chem & Technol, Chengdu 610064, Peoples R China

来源：

CHINESE JOURNAL OF INORGANIC CHEMISTRY | 2005年 / 21卷 / 01期

关键词：

macrocyclic dinuclear copper(II) complex; carboxylic esters; enzyme mimicking; hydrolysis; catalytic kinetics;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new dinuclear copper(II) complex of an octaaza di-macrocyclic ligand (bisdioxocyclam) has been synthesized and characterized by elementary analysis, TG/DTA, molar ratio and Job method. Its ability to catalyze the hydrolysis of PNPP was studied and the kinetics and mechanism for the hydrolysis of PNPP promoted by the dinuclear copper(II) complex of bisdioxocyclam was discussed in detail. For comparision, the catalytic activity of the corresponding mononuclear copper(II) complex toward the hydrolysis of PNPP was also investigated. The results indicate that the macrocyclic dinuclear copper(II) complex of bisdioxocyclam can effectively catalyzed the hydrolysis of PNPP. Apparent cooprativity between two metal ions of the macrocyclic dinuclear copper(II) complex was observed, which is similar to the "bifunctional mechanism" operated by some natural hydrolytic metalloenzyme.

引用

页码：51 / 58

页数：8

共 38 条

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