新的不对称变色酸双偶氮衍生物的合成及其结构对稀土、钍、铋显色反应的影响  

Synthesis of New Unsymmetrical Bisarylazoderivatives of Chromotropic Acid and Effect of Their Structure on Colour Reaction with Rare Earth,Thorium and Bismuth

作　　者：张华山[1] 张军锋[1] 黎心懿[1] 

机构地区：[1]武汉大学化学系,河南省农科院

出　　处：《高等学校化学学报》1995年第6期874-876,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：新的不对称变色酸双偶氮衍生物的合成及其结构对稀土、钍、铋显色反应的影响张华山，张军锋，黎心懿（武汉大学化学系，武汉，４３００７２）关键词变色酸双芳基偶氮衍生物，稀土，钍，铋，分光光度法变色酸双偶氮衍生物是光度法测定稀土、钍等金属的重要显色剂。其中多卤...Eight unsymmetrical bisarylazoderivatives of chromotropic acid such as 2, 6-dichloro(bromo)chlorophosphonazo, 2, 6-dichloro(bromo)arsenazo and so on have been synthesized.The dissociation equillibrium of new chromogenic reagents have been investigated and their dissociation constants have been determined.These chromogenic reagents are applied to the determined rare earths,thorium and bismuth.

关 键 词：芳基 偶氮衍生物 稀土 钍 铋 分光光度法 

分 类 号：O625.65[理学—有机化学] O614.33[理学—化学]