两种双核配合物催化PNPP水解反应的机理研究  

Studies on the mechanism of PNPP hydrolysis catalyzed by two dinuclear complexes

作　　者：林竹修[1] 黄生田[2] 陈勇[3] 胡伟[2] 谢家庆[1] 胡常伟[1] 曾宪诚[1] 

机构地区：[1]四川大学化学学院,四川成都610064 [2]四川理工学院化学系,四川自贡65300 [3]后勤工程学院油料应用工程系,重庆4100016

出　　处：《化学研究与应用》2004年第4期475-478,共4页Chemical Research and Application

基　　金：国家自然科学基金 ( 2 9873 0 3 1;2 0 173 0 3 8) ;四川理工学院课题 ;重庆市应用基础研究项目

摘　　要：Cu Cu(Ⅱ )和Cu Zn(Ⅱ )草酰胺桥联双核配合物被合成和表征 .研究了该同核和异核配合物催化PNPP水解的动力学和机理 ,建立了一种双核配合物催化PNPP水解的动力学数学模型 .结果表明 :在缓冲溶液中随着溶液pH的增大 ,草酰胺桥联双核配合物催化PNPP水解速率提高 ;配合物中的两个金属离子在催化PNPP水解过程中具有协同效应 ;The Cu-Cu(Ⅱ)和Cu-Zn(Ⅱ)oxamido-bridged dinuclear complexes were synthesized and characterized.The kinetics and the mechanism on PNPP hydrolysis catalyzed two oxamido-bridged dinuclear complexes were investigated.A kinetic mathematical model of PNPP cleavage catalyzed by the oxamido-bridged dinuclear complexes was proposed.The results showed:the rate of the PNPP catalytic hydrolysis was increased following increasing pH value of the buffer solution,two metal(Ⅱ)ions revealed the synergistic effects in the PNPP catalytic hydrolysis,two oxamido-bridged dinuclear complexes showed high activity in the PNPP catalytic hydrolysis,the kinetic model proposed in the paper is reasoalbe.

关 键 词：PNPP水解 草酰胺桥联双核配合物 催化 机理 

分 类 号：O643.321[理学—物理化学]