摘要
本文合成了１，４，７－三氮杂环十烷－８，１０－二酮和９－－１，４，７－三氮杂环十烷－８，１０－二酮两个新型二氧三胺大环配体、经元素分析，ＩＲ，＾１ＨＮＭＲ以及ＭＳ等方法表征。
Two novel dioxotriamine macrocycles (1,4,7- triazacyclodecane -8,10- dione( td), 9 - (2' - hydroxylbenzyl) -1,4,7 - triazacyclodecane - 8,10 - dione(btd) ) have been synthesized and characterized by elemental analysis, IR, 1H NMR and MS. The introduced substitutent has considerable effect on ligand synthesis, which was explained through molecular mechanics. By pH potentiometric titration at 25±0. 1℃, I = 0. 1 mol/L KNO3, the ligand (btd) protonation constants and its complexation equilibrium constants with Cu(Ⅱ)have been determined, and the complexation form of this kind of ligands with Cu(Ⅱ) was postulated together with the results obtained by spectra titration and EPR of the complexes. We concluded that dioxotriamine macrocycles would be regarded as a new kind of ligands different from both saturated N3 macrocycle and dioxotetraamine.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1998年第3期284-289,共6页
Acta Chimica Sinica
基金
国家自然科学基金(29671020)
关键词
酰胺
大环配体
配合物
铜
二氧三胺
macrocyclic dioxotriamine ligand,titration,equilibrium constant,complex
