论文部分内容阅读
分子中含有一个以上胺二乙酸(—N(CH_2COOH)_2)基团的化合物,通常称为氨羧络合剂。当在其分子中引入一元或多元酚羟基时,使胺基氨原子的碱性增加,从而提高配位能力。此类试剂因可用作分析化学上的掩蔽剂、显色剂,电化学上的氧化-还原试剂而引起人们的兴趣。关于含酚羟基系列氨羧络合剂的合成、结构和成络性质,苏联学者已做过一系列的研究,但下列结构的两种试剂,2,3-二羟基-对-二甲苯胺四乙酸(2,3-dihydroxyp-xylylenediimino-tetraaeetic acid,简作
Compounds containing more than one amine diacetic acid (-N (CH 2 COOH) _2) group in the molecule, commonly referred to as the amine carboxy complexing agent. When a mono- or polyhydric phenolic hydroxyl group is introduced into the molecule, the basicity of the amine-based ammonia atom is increased, thereby increasing the coordination ability. Such reagents are of interest as analytical chemistry masking agents, color developers, and electrochemical oxidation-reduction reagents. With regard to the synthesis, structure and network properties of the phenolic hydroxyl-based series of carboxylamines, Soviet scholars have done a series of studies, but the following two reagents, 2,3-dihydroxy-p-xylaniline tetra Acetic acid (2,3-dihydroxyp-xylylenediimino-tetraaeetic acid, abbreviation