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作 者:林华宽[1] 寇福平[2] 朱守荣[1] 陈荣悌[1] 解永树[2]
机构地区:[1]南开大学化学系,天津300071 [2]浙江大学化学系
出 处:《化学学报》1998年第3期284-289,共6页Acta Chimica Sinica
基 金:国家自然科学基金(29671020)
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.
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