1H NMR relaxation studies on glycerine-water and dioxan-water with paramagnetic ions

被引：2
|
作者：
Aroulmoji, V [1 ]
Rao, AS [1 ]
机构：
[1] Pondicherry Univ, Raman Sch Phys, Pondicherry 14, India
来源：
PHYSICS AND CHEMISTRY OF LIQUIDS | 2000年 / 38卷 / 06期
关键词：
NMR; paramagnetic ions; molecular association and viscosity;
D O I：
10.1080/00319100008030319
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 Proton magnetic Resonance (PMR) spin-lattice and spin-spin relaxation times (T-1 and T-2) were measured in highly viscous (glycerine-water) and less viscous (dioxan - water) systems at different temperatures. The values of relaxation times increase with increasing the temperature. This result is interpreted as due to the combined effect of viscosity and temperature in these solutions. The relaxation rimes were also measured in these solutions containing paramagnetic ions (PMI). The results indicate that the possibility of an anti-parallel bonding of the paramagnetic ions is higher in highly viscous solutions as compared to low viscous systems and the association in the above mixtures appears to be weak.
引用
收藏
页码：723 / 741
页数：19
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