氨基三甲叉膦酸铜螯合物的结构表征及其稳定常数的测定  

Structure characterization and stability constant determination of amino trimethylenephosphonic acid copper chelate

作　　者：蒋丹丹 李楠[1] 陈海相[1] 陈冬芝 魏凯佳 陈麟杰 JIANG Dandan;LI Nan;CHEN Haixiang;CHEN Dongzhi;WEI Kaijia;CHEN Linjie(Key Laboratory for Advanced Textile Materials and Manufacturing Technology,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2020年第3期413-418,共6页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(51703201)。

摘　　要：为分析氨基三甲叉膦酸铜螯合物(ATMP-Cu^2+)的结构,以氯化铜(CuCl2)、氨基三甲叉膦酸(ATMP)为原料在水溶液中制备ATMP-Cu^2+,采用傅里叶变换红外光谱法(FTIR)、紫外-可见分光光度法(UV-Vis)、电喷雾飞行时间高分辨质谱(ESI TOF-HRMS)对ATMP-Cu^2+的部分结构进行表征,利用ESI TOF-HRMS和UV-Vis分析ATMP-Cu^2+的配位比,并用UV-Vis测定ATMP-Cu^2+的稳定常数。结果表明:ATMP中的氮原子和磷酸根上的羟基氧原子与Cu^2+进行配位,配位比为1∶1;ATMP-Cu^2+的螯合稳定常数为3.15×10^7。研究结果可为ATMP螯合铜离子的应用研究提供一定的理论参考。To analyze the structure of ATMP-Cu^2+, amino trimethylenephosphonic acid copper chelate(ATMP-Cu^2+) was successfully prepared in aqueous solution by using copper chloride(CuCl2) and amino trimethylenephosphonic acid(ATMP) as the raw material, and characterized by Fourier transform infrared spectroscopy(FTIR), UV-vis absorption spectroscopy(UV-vis) and electrospray ionization time-of-flight high resolution mass spectrometry(ESI TOF-HRMS). Furthermore, ESI TOF-HRMS and UV-vis were used to analyze the coordination ratio of ATMP-Cu^2+, and the stability constant of ATMP-Cu^2+ was determined by UV-Vis. The results show that the nitrogen atom and the hydroxyl oxygen atom on phosphate radical in ATMP were coordinated with Cu^2+at a coordination ratio of 1∶1. The chelate stability constant of ATMP-Cu^2+ is 3.15×10^7. Those results provide theoretical support for the application research of ATMP chelated copper ions.

关 键 词：氨基三甲叉膦酸 铜离子 高分辨质谱 螯合配位 

分 类 号：TQ201[化学工程—有机化工]