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在乙腈和丙酮中合成了冠醚B12C4与稀土硝酸盐的配合物RE(NO_3)·B12C4·xH_2O。通过金属离子的配位滴定、冠醚B12C4的分光光度测定、溶剂的气相色谱分析以及红外光谱、差热(DSC)与热重分析和X-射线衍射分析等方法研究了配合物的组成和性质。还在15±0.1℃测定了各配合物在乙腈中的溶解度。考察了重稀土(Tm、Yb和Lu)配合物1:1型向2:1型的转变。
The complex RE (NO_3) · B12C4 · xH_2O with crown ether B12C4 and rare earth nitrate was synthesized in acetonitrile and acetone. The composition and properties of the complexes were studied by coordination titration of metal ions, spectrophotometric determination of crown ether B12C4, gas chromatography of solvents and infrared spectroscopy, differential thermal analysis (DSC), thermogravimetry and X-ray diffraction analysis . The solubility of each complex in acetonitrile was also determined at 15 ± 0.1 ° C. The conversion of heavy rare earth (Tm, Yb and Lu) complexes 1: 1 to 2: 1 was investigated.