Schiff碱型羧酸开链冠醚溶解性及酸离解常数的测定  

The determination of Schiff base-acyclic crown ethers dissolubility and acid dissociation constant

作　　者：宋楚华[1] 何晓梅[1] 

机构地区：[1]湖南建材高等专科学校,衡阳421008

出　　处：《化工时刊》2002年第3期28-30,共3页Chemical Industry Times

摘　　要：研究了端基为核基的Schiff碱型开链冠醚在水中的溶解性及酸离解常数。结果表明:当开链冠醚具有其中,X= —CH_2CH_2_—,R=CO_2H(H_2L^1)或R=—OCH_2CO_2H(H_2L^3)结构时,在水中易溶;R=OCH_2CO_2H(H_2L^4)时,在水中难溶。The dissolubility of Schiff base - acyclic crown ethers and its acid dissociation constant have been studied in this artide. It is easy for the ethers to be dissolved in water as crown ethers are where X =-CH2CH2-, R = CO2H(H2L1) ;-OCH2CO2H(H2L3);-OCH2CO2C2H5(L8). But it is difficut, where X = ,R=CO2H(H2L2);-OCH2CO2H(H2L4)。

关 键 词：SCHIFF碱型 冠醚 溶解性 酸离解常数 测定 羟酸开链 

分 类 号：O646[理学—物理化学]