三乙醇胺是一种常用试剂,它的结构式如下:(?)与一个金属离子螯合是通过N和O原子上的孤对电子实现的。作者早就指出,这一命各有误(参阅本刊1978年2期)。由于羟基和N原子相距一段距离,不可能象酰胺那样组成所谓“醇胺”。因此,它的正确名称为三羟基三乙胺或2,2′,2″-三羟基三乙胺(2,2′,2″-tJihydroxyttriethylamine)。在水溶液中它的_pk_a值为7.90;换言之‘它的_pk_b值 Triethanolamine is a commonly used reagent whose structure is as follows: (?) Chelation with a metal ion is achieved by the lone pair of electrons on the N and O atoms. The author has long pointed out that this life is wrong (see 1978). As the hydroxyl and N atoms are separated by a distance, it is impossible to form a so-called “alcoholam” like an amide. Therefore, its proper name is trihydroxy triethylamine or 2,2 ’, 2 “-trihydroxy triethylamine (2,2’, 2” -tJhydroxyttriethylamine). The value of _pk_a in aqueous solution is 7.90; in other words, its value of _pk_b