MAGNESIUM-25 NMR-STUDIES OF MAGNESIUM SALTS AND COMPLEXES IN NON-AQUEOUS SOLVENTS

被引：11

作者：

HEUBEL, PH ^{[1
]}

POPOV, AI ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824

来源：

JOURNAL OF SOLUTION CHEMISTRY | 1979年 / 8卷 / 04期

关键词：

crowns; cryptands; macrocyclic ligands; magnesium salts; Magnesium-25; NMR; nonaqueous solvents; phosphonoacetic acid;

D O I：

10.1007/BF00650746

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：

Magnesium-25 NMR measurements were carried out on aqueous and non-aqueous solutions of magnesium salts. In the former case the25Mg resonance frequency was independent of the concentration or of the counterion. In nonaqueous solvents, however, the resonance frequency was dependent on the solvent, the concentration, and on the nature of the counterion, indicating some cation-anion interactions. Measurements on Mg2+-phosphonoacetic acid mixtures in aqueous solutions gave strong indications of complexation. Only inconclusive evidence was obtained on the complexation of Mg2+ by macro-bicyclic cryptand C211 in methanol solutions, and no evidence of complexation was obtained with macrocycle 12-crown-4 in dimethylformamide solutions. © 1979 Plenum Publishing Corporation.

引用

页码：283 / 291

页数：9

共 11 条

[1] ON THE MAGNETIC MOMENTS OF MG-25,RE-185,RE-187,AND BE-9 [J].