NUCLEAR SPIN RELAXATION AND CHEMICAL EXCHANGE EFFECTS IN 19F NUCLEAR MAGNETIC RESONANCE SPECTRUM OF HEXAFLUORONIOBATE ION

被引：26

作者：

AKSNES, DW

HUTCHISO.SM

PACKER, KJ

机构：

[1] School of Chemical Sciences, University Plain, University of East Anglia, Norwich

[2] Kjemisk Institutt, Universitetet i Bergen, Bergen

[3] E.R.D.E., Waltham Abbey, Hertfordshire

来源：

MOLECULAR PHYSICS | 1968年 / 14卷 / 04期

关键词：

D O I：

10.1080/00268976800100371

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：

19F N.M.R. spectra of solutions containing the hexafluoroniobate ion are reported for a range of temperatures. Computer fitting of the observed line shapes shows that both quadrupole-induced transitions between the spin states of the 93Nb nucleus and chemical exchange of the fluorine atoms contribute to the line shapes by modulating the 93Nb-19F scalar coupling. The unusual temperature dependence of the observed 93Nb relaxation rates is explained in terms of a simple model. © 1968 Taylor and Francis Group, LLC.

引用

页码：301 / &

共 13 条

[1]

ABRAGAM A, 1961, PRINCIPLES NUCLEAR M

[2] A MATHEMATICAL MODEL FOR THE NARROWING OF SPECTRAL LINES BY EXCHANGE OR MOTION [J].