J-COMPENSATED PROTON-DETECTED HETERONUCLEAR SHIFT-CORRELATION EXPERIMENTS

被引：16
|
作者：
TORRES, AM
NAKASHIMA, TT
MCCLUNG, RED
机构：
[1] Department of Chemistry, University of Alberta, Edmonton
来源：
JOURNAL OF MAGNETIC RESONANCE SERIES A | 1993年 / 102卷 / 02期
关键词：
D O I：
10.1006/jmra.1993.1094
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A new proton-detected heteronuclear shift-correlation experiment, J-HSMQC, is proposed for sensitivity enhancement for samples containing a wide range of 1JCH values. This method, which incorporates only two additional τ periods and has the same number of RF pulses as the HSQC experiment, is found to give significant enhancements for CH fragments with 1JCH values which deviate considerably from the coupling constant for which τ is optimal. The J-HSMQC maps also contain reasonably intense two-bond correlations for some CH fragments. © 1993 by Academic Press, Inc.
引用
收藏
页码：219 / 227
页数：9
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