ABSORPTION AND CIRCULAR DICHROIC SPECTRAL STUDIES OF EUROPIUM(3) COMPLEXES WITH SUGAR ACIDS,AND AMINO ACIDS, WITH REMARKS ON HYPERSENSITIVITY

被引：39

作者：

KATZIN, LI

机构：

[1] Department of Chemistry, Argonne National Laboratory, Argonne

来源：

INORGANIC CHEMISTRY | 1969年 / 8卷 / 08期

关键词：

D O I：

10.1021/ic50078a015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Chelate complexes of Eu(III) with sugar acids, both in the acid and neutral pH ranges, are demonstrated. Complexing takes place through the carboxylate group and the γ-hydroxyl, revealed by the CD relations of the gluconic and galactonic acid complexes. In addition to chelate complexes of the -amino acids in the neutral to alkaline pH range, monodentate complexes with the zwitterionic form are demonstrated. Besides the known “hypersensitive” behavior of the 7Fo → 5D2 transition in the absorption spectrum, hypersensitivity is also indicated for the 7FO → 5DO and 7F0 → 5D2 transitions and perhaps in others which share the relation ∣ΔJ∣ = 0, 2. A requirement seems to be binding of an anion, which may include reduction of symmetry. Some potentially revealing characteristics of the CD spectra are pointed out. © 1969, American Chemical Society. All rights reserved.

引用

页码：1649 / &

共 13 条

[1] NEAR INFRARED TRANSITIONS OF TRIVALENT LANTHANIDES IN SOLUTION .1. PRASEODYMIUM(III), NEODYMIUM(III), SAMARIUM(III), AND EUROPIUM(III) IONS [J].