摘要
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。
The facts that two types of complexes 4Nd(NO3)3·3(18C6) and Nd(NO3)3·18C6 of 18C6 with Nd(NO3)3·4H2O can come into being in acetonitrile, acetone or anhydrous ethyl alcohol have been proved. It is bound to form the complexes 4Nd(NO3)3·3(18C6) (or Nd(NO3)3·18C6) if the mole numbers of salts and crown in the organic solvents is in a ratio of ≥ four to three (or ≤ one to one). Two kinds of the complexes are congruent and are all slightly soluble in the above mentioned solvents at the room temperature. The mutual conversion between 4Nd(NO3)3·3(18C6) and Nd(NO3)3·18C6 has been realized in CH3CN and the condition of transformation has also been discussed in detail. The method of distinguishing qualitatively abcve complexes by I.R. and TG curve has been proposed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1990年第1期76-82,共7页
Chinese Journal of Inorganic Chemistry
