DETERMINATION OF C-N INTERNUCLEAR DISTANCES BY ROTATIONAL-ECHO DOUBLE-RESONANCE NMR OF SOLIDS

被引：184
|
作者：
PAN, Y
GULLION, T
SCHAEFER, J
机构：
[1] Department of Chemistry, Washington University, St. Louis
来源：
JOURNAL OF MAGNETIC RESONANCE | 1990年 / 90卷 / 02期
基金：
美国国家卫生研究院; 美国国家科学基金会;
关键词：
D O I：
10.1016/0022-2364(90)90138-Y
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Rotational-echo, double-resonance (REDOR) 15N13C NMR has been performed on an alanine cocrystallized from five-component alanines, isotopically enriched in 13C, 15N, or 12C. REDOR 15N13C NMR involves the dephasing of carbon magnetization by 15N 180° pulses synchronized with magic-angle spinning. The CN dipolar coupling determines the extent of dephasing. The results of these experiments on alanine show that it is practical to use REDOR to measure the CN dipolar coupling of 5 μmol of a 13C15N-labeled pair having an Internuclear separation of the order of 4.5 Å. © 1990.
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页码：330 / 340
页数：11
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