波谱学杂志 ›› 1988, Vol. 5 ›› Issue (3): 287-293.

• 研究论文 • 上一篇    下一篇

FX-100核磁共振谱仪上的MLEV-16宽带去偶实验

沙朝晨, 高新风, 陈宜宜, 裴奉奎   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-06-05 修回日期:1987-10-12 出版日期:1988-09-05 发布日期:2018-01-22
  • 基金资助:
    中国科学院科学基金资助

MLEV-16 BROADBAND DECOUPLING EXPERIMENT ON FX-100 NMR SPECTROMETER

Sha Zhaochen, Gao Xinfeng, Chen Yiyi, Pei fengkui   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1987-06-05 Revised:1987-10-12 Online:1988-09-05 Published:2018-01-22

摘要: 本文叙述了在FX-100核磁共振谱仪上进行的MLEV-16宽带去偶实验。实验表明:其去偶范围大大增加,效率明显提高,对常规质子去偶的13C谱实验所需要的去偶场B2比谱仪原有的噪声去偶系统的去偶场B2降低约一个数量级。并且,用谱仪原有的去偶功率实现了13C{19F}氟宽带去偶的13C谱的观测,去偶范围达14KHz,可以满足大部分氟化物的13C核磁共振研究的要求。

关键词: 核磁共振, MLEV-16序列, 19F宽带去偶

Abstract: The MLEV-16 broadband decoupling scheme is built up on FX-100 NMR spectrometer.By using this decoupling set, the decoupling range is greatly extended and decoupling efficiency is remarkably raised.when applied to a conventional proton decoupling 13C NMR experiment, the required decoupling feild for this scheme is reduced at least an order of magnitudein comparison with noise decoupling. Application of this scheme allows the decoupling of fluorine nuclei over 14KHz with primary decoupling feild of FX-100 NMR spectrometer (about 7KHz), t fulfills a basic requirement for the 13C {19F} NMR study of most fluorine compounds.

Key words: NMR, MLEV-16 sequence, 19F broadband decoupling