Magnetic resonance of 3He and 129Xe in aqueous solutions containing paramagnetic Mn2+ and Co2+ ions.: A comparison with isoelectronic 7Li+ and 133Cs+ ions

被引：1

作者：

Mazitov, R

Seydoux, R

Diehl, P

Enikeev, K

Il'yasov, A

Haselmeier, R

机构：

[1] Russian Acad Sci, Inst Gen & Inorgan Chem, Moscow 117071, Russia

[2] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[3] Russian Acad Sci, Inst Organ & Phys Chem, Kazan, Russia

[4] Univ Karlsruhe, Inst Phys Chem, Karlsruhe, Germany

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2000年 / 214卷

关键词：

Noble Gas; He-3; Xe-129; paramagnetic ions; aqueous solutions;

D O I：

10.1524/zpch.2000.214.12.1671

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：

The chemical shifts and relaxation times T-1 and T-2 of He-3 and Xe-129 nuclei of noble gas atoms as well as those of Li-7 and Cs-133 nuclei of isoelectronic Li+ and Cs+ ions have been measured in aqueous solutions, which contain paramagnetic Mn2+ and Co2+ ions. The magnetic relaxation of all studied nuclei in Co2+ solutions proceeds via an electronic spin relaxation of these ions. The relaxation in Mn2+ solutions is determined by the translational diffusion of the solute particles. The closest approach distances for collisions of paramagnetic ions with atoms of noble gases and alkali ions were estimated from relaxation data.

引用

页码：1671 / 1685

页数：15