MOTIONAL NARROWING OF C-13 DIPOLAR MAGIC-ANGLE-SPINNING NUCLEAR-MAGNETIC-RESONANCE SPECTRA

被引：9

作者：

OHE, H

KUBO, A

KATADA, M

SANO, H

机构：

[1] Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, Setagaya, Tokyo, 158, Fukasawa

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 172卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(90)85404-Z

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 effects of molecular motions on the dipolar coupled 13C magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) spectra of alkane-urea inclusion compounds and bis(ethylammonium) hexachlorostannate were investigated. The contact time dependences of 13C cross-polarization (CP) MAS NMR spectra were measured for the tridecane-urea inclusion compounds at the Hartman-Hahn condition and at the off-Hartman-Hahn condition. Rotational echoes were observed at a multiple of the rotational periods both in the dipolar dephasing experiments and the CP experiments. These rotational echo shapes were analyzed by the presently proposed theory. © 1990.

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页码：284 / 290

页数：7

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