稀土元素与二缩三乙二醇二甲醚配合物的合成、NMR及其构象研究

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合成了15种新的镧系高氯酸盐和二缩三乙二醇二甲醚的配合物,证明其组成为 Ln(ClO_4)·EO_3Me_2·5H_2O(Ln=La—Lu,Y).由于端基的改变明显影响配位能力,因而引起配合物组成及物化性质等一系列变化.本文尝试以~C NMR 弛豫速率法获取直链聚醚配合物中的结构信息,并探讨其构象问题,实验证明成配后配体采取全 TGT 构象. Fifteen novel complexes of lanthanide perchlorate and triethylene glycol dimethyl ether were synthesized and proved to be Ln (ClO 4) · EO 3 Me 2 · 5H 2 O (Ln = La-Lu, Y) The change of the group obviously affected the coordination ability, which led to a series of changes in the composition and the physicochemical properties of the complex.In this paper, the structural information in linear polyether complexes was obtained by ~ C NMR relaxation rate method and the conformational problems were discussed. Experiments show that after ligand ligand to take full TGT conformation.
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