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证实了18C6和水合硝酸钕在乙腈、丙酮和无水醇中均可形成Nd(NO_3)_3·18C6和[Nd(NO_3)_3]_4[18C6]_3两种类型的配合物如果按盐、醚摩尔比≤1:1配料,室温下充分反应,必然生成1:1型配合物;如果按盐、醚摩尔比≥4:3配料,室温下充分反应,必然生成4:3型配合物。两种配合物都是固液同成分化合物。两种配合物在上述三种溶剂中的溶解度都非常小。实现了两种配合物在溶液中的相互转变,讨论了转变的条件。提出了用红外光谱和热重曲线定性鉴别两种配合物的方法。
It was confirmed that both Nd (NO_3) _3 · 18C6 and [Nd (NO_3) _3] _4 [18C6] _3 complexes could be formed in acetonitrile, acetone and anhydrous alcohol if 18C6 and neodymium hydrate were used. If the molar ratio is less than 1: 1, sufficient reaction at room temperature will inevitably lead to the 1: 1 type complex. If the molar ratio of salt to ether is more than 4: 3, the reaction will react at room temperature, and a 4: 3 type complex will inevitably be formed. Both complexes are solid-liquid with the composition of compounds. The solubility of the two complexes in the above three solvents is very small. The mutual conversion between the two complexes in solution was achieved and the conditions for the transformation were discussed. A method for the qualitative identification of two complexes by infrared spectroscopy and thermogravimetry is proposed.