TENSOR CORRELATION BY 2D SPIN-DIFFUSION POWDER NMR-SPECTROSCOPY - DETERMINATION OF THE ASYMMETRY OF THE HYDROGEN-BOND POTENTIAL IN BENZOIC-ACID

被引：55
作者：
ROBYR, P
MEIER, BH
ERNST, RR
机构：
[1] Laboratorium für Physikalische Chemie, Eidgenössische Technische Hochschule
来源：
CHEMICAL PHYSICS LETTERS | 1991年 / 187卷 / 05期
关键词：
D O I：
10.1016/0009-2614(91)80285-6
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：
It is demonstrated that by two-dimensional spin-diffusion powder NMR spectroscopy it is possible to determine accurately relative interaction-tensor orientations. This technique is applied to the determination of the asymmetry of the potential for the proton exchange across the hydrogen bonds in crystalline benzoic acid. From the temperature dependence of the relative orientation of two carboxyl C-13 chemical-shielding tensors, the asymmetry of the double minimum potential could be determined to be 418 +/- 128 J/mol.
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页码：471 / 478
页数：8
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