2D EPR INVESTIGATION OF ENDOHEDRAL LA-AT-C-82 IN SOLUTION

被引：30

作者：

RUBSAM, M

PLUSCHAU, M

SCHWEITZER, P

DINSE, KP

FUCHS, D

RIETSCHEL, H

MICHEL, RH

BENZ, M

KAPPES, MM

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST NUKL FESTKORPERPHYS,D-76021 KARLSRUHE,GERMANY

[2] UNIV KARLSRUHE,D-76131 KARLSRUHE,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 240卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(95)00586-S

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 analysis of a two-dimensional EPR spectrum gives direct evidence for a dominant nuclear quadrupole interaction at the site of the encapsulated La3+ ion. From the observed nuclear spin transition rates we deduce eQV(zz)/[I(2I - 1)h] approximate to 0.5(3) MHz, assuming that the correlation time of the electric field gradient axes is determined by molecular reorientation of the molecule in solution. The non-vanishing value of the quadrupole interaction is further proof for an off-center position of the metal ion.

引用

页码：615 / 621

页数：7

共 11 条

[1]

ABRAGAM A, 1970, PRINCIPLES NUCLEAR M

[2]

ANGERHOFER A, 1988, ISRAEL J CHEM, V28, P227

[3] MEASUREMENT OF CRYSTAL FIELD GRADIENT AT NUCLEUS OF 3 LANTHANUM SALTS [J].