Complexes of praseodymium(III) with D-gluconic acid

被引：44

作者：

Giroux, S ^{[1
]}

Rubini, P ^{[1
]}

Henry, B ^{[1
]}

Aury, S ^{[1
]}

机构：

[1] Univ Nancy 1, Lab Chim Phys Organ & Colloidale, Unite Mixte CNRS, SRSMC,UMR 7565, F-54506 Vandoeuvre Les Nancy, France

来源：

POLYHEDRON | 2000年 / 19卷 / 13期

关键词：

D-gluconic acid; D-galactonic acid; D-gulonic acid; praseodymium(III); complexation;

D O I：

10.1016/S0277-5387(00)00422-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complexation of the praseodymium(III) ion with D-gluconic acid was studied by potentiometry. UV-Vis spectrophotometry, circular dichroism (CD) experiments and H-1 and C-13 NMR. In order to determine the coordination sites, the study of the complexation with D-galactonic and D-gulonic acids was also achieved. It was found that six different complexes are formed in solution from pH 2 to 11.5. The formation constants were determined. For four species among the six, D-gluconic acid binds the cation with deprotonated hydroxylic group(s) in addition to the carboxylate group. On the basis of the spectroscopic results, the structures of the complexes are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1567 / 1574

页数：8

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