Phenol-amide chelates of cobalt(II),nickel(II),copper(II)and zinc(II)as catalysts for hydrolysis of active esters.Part II~a.Kinetics and mechanism of hydrolysis of 4-nitrophenylacetate by the metal(II)chelates of l,2-bis(2-hydroxybenzamido)ethane and

Mahashweta Sahu; Guru C pradhan; Prakash Mohanty; Anadi C Dash

首页> 外文期刊>Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical >Phenol-amide chelates of cobalt(II),nickel(II),copper(II)and zinc(II)as catalysts for hydrolysis of active esters.Part II~a.Kinetics and mechanism of hydrolysis of 4-nitrophenylacetate by the metal(II)chelates of l,2-bis(2-hydroxybenzamido)ethane and

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Phenol-amide chelates of cobalt(II),nickel(II),copper(II)and zinc(II)as catalysts for hydrolysis of active esters.Part II~a.Kinetics and mechanism of hydrolysis of 4-nitrophenylacetate by the metal(II)chelates of l,2-bis(2-hydroxybenzamido)ethane and

机译：钴（II），镍（II），铜（II）和锌（II）的酚酰胺螯合物作为活性酯水解的催化剂。第二部分〜a.4-硝基苯基乙酸被金属水解的动力学和机理II）1,2-双（2-羟基苯甲酰胺基）乙烷和

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The hydrolysis of 4-nitrophenyl acetate(PNPA)has been studied using mononuclear chelates(ML)of cobalt(II),nickel(II),copper(II)and zinc(II)with l,2-bis(2-hydroxybenzamido)-and l,3-bis(2-hydroxybenzamido)-propane(L2)at 26.5(+-)0.2degC,I=0.5 mol dm~(-3),8.1<=pH<=9.4(tris buffer),0.25<=10~3[ML]_T/mol dm~(-3)<=3.0.and 35.0% MeOH+water.The ionized species[M(L-H)]~(due to metal ion promoted amide deprotona-tion)are found to be reactive species for catalysis of PNPA hydrolysis.

机译：研究了钴（II），镍（II），铜（II）和锌（II）与1,2-双（2-羟基苯甲酰胺）的单核螯合物（ML）的水解4-硝基苯乙酸酯（PNPA）的水解-和1,3-双（2-羟基苯甲酰胺基）丙烷（L2）在26.5（±）0.2°C，I = 0.5 mol dm〜（-3），8.1 <= pH <= 9.4（tris缓冲液），0.25 <= 10〜3 [ML] _T / mol dm〜（-3）<= 3.0。35.0％MeOH +水。离子化物质[M（LH）]〜（由于金属离子促进的酰胺去质子化作用）被发现是催化PNPA水解的反应性物质。

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《Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical》 |2004年第6期|共5页
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Mahashweta Sahu; Guru C pradhan; Prakash Mohanty; Anadi C Dash;
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Phenol-amide chelates of cobalt(II),nickel(II),copper(II)and zinc(II)as catalysts for hydrolysis of active esters.Part II~a.Kinetics and mechanism of hydrolysis of 4-nitrophenylacetate by the metal(II)chelates of l,2-bis(2-hydroxybenzamido)ethane and

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