波谱学杂志 ›› 2000, Vol. 17 ›› Issue (1): 79-82.

• 研究论文 • 上一篇    下一篇

DEPT-(90+45),一个新的谱编辑技术

丁克洋   

  1. 中国科学院广州化学研究所, 广州 510650
  • 收稿日期:1999-09-07 修回日期:1999-11-15 出版日期:2000-02-05 发布日期:2018-01-10
  • 作者简介:丁克洋,男,1962年出生,博士,副研究员
  • 基金资助:
    中国科学院广州分院测试与仪器分析中心资助课题

DEPT-(90+45), A NEW SPECTRAL EDITING TECHNIQUE

DING Keyang   

  1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650
  • Received:1999-09-07 Revised:1999-11-15 Online:2000-02-05 Published:2018-01-10

摘要: 将DEPT-135序列的135°-脉冲分成一个90°-脉冲和一个45°-脉冲,设计了一个新的谱编辑技术,称为DEPT-(90+45).应用不同的相位循环,可以分别得到只有甲基的13C谱和只有亚甲基的13C谱.只有甲基的13C谱完全没有其他基团的残余干扰信号.但是,只有次甲基的13C谱(DEPT-90)和只有亚甲基的13C谱均混有所选基团之外的残余干扰信号.因此,DEPT-(90+45)将是一个非常有用的谱编辑技术.

关键词: 谱编辑, DEPT, 核磁共振

Abstract: A novel spectral editing technique, which can be referred to as DEPT-(90+45), is described. It is modified from the DEPT-135 pulse sequence by substituting the 135° -pulse by a 90° -pulse and a 45° -pulse. By employing different phase cycles, one can obtain methyl-only spectrum and methylene-only spectrum. The methyl only spectrum is completely free of residual methine and methylene signals. However, the methine-only spectrum (DEPT-90) and the methylene-only spectrum are interfered with substantial residual signals from not-selected carbon-proton groups. As a consequence, DEPT-(90+45) can be very useful for spectral editing in one-dimensional NMR spectroscopy.

Key words: Spectral editing, DEPT, NMR