稀土冠醚类配合物的研究(Ⅻ)——轻稀土溴化物与苯并-15-冠-5配合物的合成及性质

Studies on the Complexes of Rare Earth with Crown Ethers(ⅩⅡ)——Synthesis and Characterization of Lighter Rare Earth Bromide Complexes with Benzo-15-crown-5(B15C5)

以热乙睛为介质,合成出轻稀土溴化物与苯并-15-冠-5(B15C5)的配合物Ln(B15C5)Br_3·nH_2O(Ln=L_α-Nd,n=1,2).所得配合物是非溶剂化的,置于空气中吸水很快.通过元素分析、溶解性与摩尔电导、红外光谱、紫外光谱、核磁共振氢谱及差热一重分热析研究了配合物的组成和有关性质.

Complexes of lighter rare earth bromides LnBr_3(Ln=La-Nd)withbenzo-15-crown-5 with a 1∶1 stoichiometry are obtained from refluxingacetonitrile.All the isolated complexes are hydroscopic in atmosphereunder characterizition through elemental analyses,solubilities and molarconductances,IR and UV spectra,~1H NMR,thermogravimetric anddifferential thermal analyses.