一种二脲化合物的合成及其阴离子识别性质  

Synthesis and Anion Recognition Property of a Diurea Compound

作　　者：卢季红[1] LU Ji-hong(School of Chemistry and Chemical Engineering,Guizhou University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《广州化工》2020年第5期49-51,共3页GuangZhou Chemical Industry

基　　金：贵州大学培育项目(黔科合平台人才[2018]5781-51)。

摘　　要：以对硝基苯异氰酸酯和邻氨基苯甲酰肼反应,设计合成了一种二脲化合物L,并采用核磁共振氢谱及红外对其结构进行了表征。通过紫外-可见吸收光谱考察了化合物L与系列阴离子之间的识别性质,实验结果表明,化合物L对HP2O73-有明显的选择性识别作用。进一步通过紫外-可见光谱确定了化合物L与HP2O73-的配位比为1∶1,并经非线性拟合得到反应平衡常数为K=5. 33×10^4L·mol^-1。A diurea compound( L) was synthesized from the reaction of 4-nitrophenyl isocyanate and 2-aminobenzoylhydrazide,and the structure was characterized by 1H NMR and IR. The results showed that compound L displayed a selective recognition ability for HP2O73--with a series of anions by using UV-Vis absorption spectra technique.Furthermore,the coordination reaction of compound L with HP2O73--was investigated via UV-Vis spectra,which demonstrated that the stoichiometric ratio was 1∶1 and the association constant( K = 5. 33×10^4 L·mol^-1) was obtained by nonlinear curve fitting.

关 键 词：合成 二脲 阴离子 选择性识别 

分 类 号：O622.4[理学—有机化学]