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胡常伟

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Metallomicelles made of dinuclear copper (II) complexes of oxamido-bridge as symmetric two-center catalysts of the cleavage of carboxylic acid esters

胡常伟Jia-qing Xie a Si-qing Cheng b Bing-ying Jiang a Juan Du a Chang-wei Hu a Xian-cheng Zeng a*

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摘要/描述

The syntheses of the dinuclear copper (II) complexes 1 and 2 of oxamido-bridge were reported. Reaction kinetics and the mechanism on hydrolysis of p-nitrophenyl picolinate (PNPP) and p-nitrophenyl acetate (PNPA) catalyzed by the metallomicelles formed from the complex (1 or 2) and surfactants (N-lauroyl sarcosinate (LSS), polyoxyethylene (23) lauryl ether (Brij35), cetyl pyridinium bromide (CPB)) were investigated. The kinetic mathematical models for the catalytic hydrolysis of PNPP and PNPA were proposed, respectively. The effects of different micelles and the structure of the ligands on the catalytic hydrolysis of PNPP and PNPA were discussed in detail. The results showed that the rate enhancement of the catalytic hydrolysis of PNPP following the intramolecular reaction is bigger than that of PNPA following the intermolecular reaction in the same experimental conditions, and the metallomicelle containing oxamido-bridged dinuclear copper (II) complex may be a potential catalyst for the hydrolysis of PNPP and PNPA.

【免责声明】以下全部内容由[胡常伟]上传于[2005年07月20日 22时49分47秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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