机构地区: 惠州学院化学工程系
出 处: 《惠州学院学报》 2005年第6期12-18,共7页
摘 要: 首次合成了一种链式苯并酰胺配体N,N’—双(2-羧基苯基)草酸二酰胺.其熔点为281℃,对该配体进行了红外光谱测定,用连续变化光度法在非水溶剂DMF溶液中测定该配体和三种过渡金属离子Cu2+、Zn2+、Co2+所形成配合物的稳定常数.实验表明,配位情况类似低肽的配合物,配位比为1∶1,稳定性顺序Cu2+>Zn2+>Co2+与Irving-Williams顺序一致. N, N'-bis (2- carboxyl benzenoid) -Oxamide was synthesized and characterized by IR. The mea- sured m. p. was 281 ℃. Stability constants of the complexes formed by N, N' - bis (2 - carboxyl benzenoid) - Oxamide with three transitional metal ions, Cu^2+, Zn^2+, Co^2 + were determined by continuous changing spectrophotometry in DMF, at 28℃. Experimental results showed that the circumstances resemble oligopeptide. The ligand was found to form 1 : 1 complexes with metal ions. The order of their logarithmic values is as follows : Cu^2 + 〉 Zn^2 + 〉 Co^2 +, being in concordance with Irving - Williams order.