三种安替吡啉偶氮化合物的合成及与金属离子的显色反应  

Synthesis of Three Antipyrinylazo Compounds and Their Color Reaction with Metals

作　　者：于秀兰[1] 张嘉月[1] 

机构地区：[1]沈阳化工大学应用化学学院,辽宁沈阳110142

出　　处：《化学世界》2013年第10期580-584,共5页Chemical World

基　　金：湖北省教育厅重点科研项目(2004D005)

摘　　要：合成了三种安替吡啉偶氮化合物：7-（4-安替吡啉偶氮）-8-羟基喹啉、5-（4-安替吡啉偶氮）水杨醛和5＇-安替吡啉偶氮水杨基荧光酮，并用IR光谱和。HNMR光谱分析方法确证其结构。分析其与三种金属离子铌、锆和钒的显色反应，建立了7-（4-安替吡啉偶氮）-8-羟基喹啉测定微量钒（V）的新方法。在室温及PH为6．8的HAc-NH4Ac缓冲溶液中，7-（4-安替吡啉偶氮）-8-羟基喹啉与钒（V）形成-种稳定的橘红色的配合物，其最大吸收峰位于480nm，表观摩尔吸光系数为3．17×10‘L／（m01．cm），在25mL溶液中，钒量在O～30gg范围内符合比尔定律。Three antipyrinylazo compounds, 7-（4-antipyrinylazo）-8-hdroxyquinoline, antipyrinylazo salicyl-aldehyde and 5-antipyrinylazo salicylfluorone, were synthesized and characterized by IR and 1 H NMR spec troscopy. Some chromogenic reactions of three metal ions, niobium, zirconium and vanadium, with them were studied. A new method was proposed to determine vanadium ions by forming a stable orange red complex through their interaction with 7-（4-antipyrinylazo）-8-hdroxyquinoline at room temperature and in the presence of HAc-NH4Ac buffer solution at pH=6.8. The complex gave a maximum absorption at 2= 480 nm with a molar absorptivity coefficient of 3.17）〈 104L/（mol .cm）, and the Beer＇s law was obeyed in the range 0-30 ug in the solution of 25mL for vanadium.

关 键 词：安替吡啉偶氮化合物 合成 分光光度法 钒 

分 类 号：O657.32[理学—分析化学]