EFFECT OF MOLAR RATIOS OF LIGAND TO METAL ON THE STRUCTURE, LUMINESCENCE AND STABILITY OF AQUEOUS LANTHANIDE COMPLEXES WITH 2,6-DIPICOLINIC ACID

被引：0

作者：

PARKS, EJ ^{[1
]}

FALTYNEK, RA ^{[1
]}

BRINCKMAN, FE ^{[1
]}

PENG, JY ^{[1
]}

机构：

[1] US POSTAL SERV,RES & DEV LABS,ROCKVILLE,MD 20852

来源：

JOURNAL OF THE LESS-COMMON METALS | 1986年 / 126卷

基金：

美国国家科学基金会;

关键词：

ACIDS; -; LUMINESCENCE;

D O I：

10.1016/0022-5088(86)90302-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lanthanide metals form bright, luminescent complexes with the sodium salts of 2,6-dipicolinic acid (2,6-DPA) in aqueous solution. Pure crystals of the complex of terbium with 2,6-DPA are precipitated from neutral aqueous solutions. For such crystals elemental analysis indicates the molar ratio of 3:1 of ligand to central metal. However, the total luminescence of the complex in aqueous solution is a function not only of metal concentration but also of the molar ratio of ligand to metal. In solutions having a molar ratio of 0. 5:1 to about 2. 5:1, it is probable that solvated complexes form that, in turn, have molar ratios proportional to the solvated ligand and metal.

引用

页码：300 / 300

页数：1

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