有关冠醚与一、二价金属离子溶液配合物稳定性研究,文献上已有很多报道,而关于三价f-族离子的研究尚少且不系统。 正如一些作者所指出的那样,由于冠醚是中性类配体,最常用的pH法不能用来研究它的配合物。但是,已经知道,它与其他常见中性配体不同,能与一价碱金属离子M~+形成稳 There have been many reports on the stability of the complexes of crown ethers with one or two valent metal ion solutions. However, the research on trivalent f-group ions is still rare and not systematic. As some authors have pointed out, since the crown ether is a neutral ligand, the most commonly used pH method can not be used to study its complex. However, it is known that unlike other common neutral ligands, it forms stable with monovalent alkali metal ions M ~ +