| Accelerated Hydrolysis of p-Nitrophenyl Picolinate Catalyzed by Metallomicelle Made from a Novel Macrocyclic Polyamine Copper（Ⅱ） Complex |
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| 引用本文： | 寇兴明,赵国坡,黄忠,田玉华,孟祥光,曾宪诚.Accelerated Hydrolysis of p-Nitrophenyl Picolinate Catalyzed by Metallomicelle Made from a Novel Macrocyclic Polyamine Copper（Ⅱ） Complex[J].中国化学,2007,25(6):772-777. |
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| 作者姓名： | 寇兴明 赵国坡 黄忠 田玉华 孟祥光 曾宪诚 |
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| 作者单位： | [1]Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China [2]China Academy of Engineering Physics, Mianyang, Sichuan 621900, China |
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| 基金项目： | Project supporter by the National Natural Science Foundation of China （Nos. 20173038, 20107004）. |
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| 摘 要： | A copper（Ⅱ） complex 1 of a novel macrocyclic polyamine ligand with hydroxylethyl pendant groups, 4,11-bis（hydroxylethyl）-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane （L） has been synthesized and characterized. Rate enhancement for hydrolysis of p-nitrophenyl picolinate （PNPP） catalyzed by 1 was studied kinetically under Brij35 micellar condition. For comparision, the catalytic activity of corresponding copper（Ⅱ） complex 2 of non-substituted macrocyclic polyamine ligand, 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraaza-cyclotetradecane （L＇） toward the hydrolysis of PNPP was also investigated. The results indicate that the macrocyclic polyamine copper（Ⅱ） complex 1 effectively catalyzed the hydrolysis of PNPP, and the pendant ligand hydroxyl group or deprotonated pendant ligand hydroxyl group can act as catalytically active species in the reaction. A ternary Complex kinetic model involving metal ion, ligand and substrate has been proposed, and the results confirmed the reasonability of such kinetic model.
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| 关 键 词： | 羧酸脂 PNPP 加速水解 催化 金属胶束 大环多胺铜配合物 |
| 修稿时间： | 2006-03-102007-02-08 |
Accelerated Hydrolysis of p-Nitrophenyl Picolinate Catalyzed by Metallomicelle Made from a Novel Macrocyclic Polyamine Copper（Ⅱ） Complex |
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| KOU, Xing-Ming ZHAO, Guo-Po HUANG, Zhong TIAN, Yu-Hua MENG, Xiang-Guang ZENG Xian-Cheng.Accelerated Hydrolysis of p-Nitrophenyl Picolinate Catalyzed by Metallomicelle Made from a Novel Macrocyclic Polyamine Copper（Ⅱ） Complex[J].Chinese Journal of Chemistry,2007,25(6):772-777. |
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| Authors: | KOU Xing-Ming ZHAO Guo-Po HUANG Zhong TIAN Yu-Hua MENG Xiang-Guang ZENG Xian-Cheng |
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| Institution: | a Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China; b China Academy of Engineering Physics, Mianyang, Sichuan 621900, China |
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| Abstract: | A copper(II) complex 1 of a novel macrocyclic polyamine ligand with hydroxylethyl pendant groups, 4,11‐bis(hydroxylethyl)‐5,7,7,12,14,14‐hexamethyl‐1,4,8,11‐tetraazacyclotetradecane ( L ) has been synthesized and characterized. Rate enhancement for hydrolysis of p‐nitrophenyl picolinate (PNPP) catalyzed by 1 was studied kinetically under Brij35 micellar condition. For comparision, the catalytic activity of corresponding copper(II) complex 2 of non‐substituted macrocyclic polyamine ligand, 5,7,7,12,14,14‐hexamethyl‐1,4,8,11‐tetraaza‐cyclote‐ tradecane ( L′ ) toward the hydrolysis of PNPP was also investigated. The results indicate that the macrocyclic polyamine copper(II) complex 1 effectively catalyzed the hydrolysis of PNPP, and the pendant ligand hydroxyl group or deprotonated pendant ligand hydroxyl group can act as catalytically active species in the reaction. A ternary complex kinetic model involving metal ion, ligand and substrate has been proposed, and the results confirmed the reasonability of such kinetic model. |
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| Keywords: | macrocyclic polyamine copper（Ⅱ） complex carboxylic ester metallomicelle hydrolysis |
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