| DEPT-(90+45),一个新的谱编辑技术 |
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| 引用本文： | 丁克洋.DEPT-(90+45),一个新的谱编辑技术[J].波谱学杂志,2000,17(1):79-82. |
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| 作者姓名： | 丁克洋 |
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| 作者单位： | 中国科学院广州化学研究所, 广州 510650 |
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| 基金项目： | 中国科学院广州分院测试与仪器分析中心资助课题 |
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| 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.
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| 关 键 词： | 谱编辑 DEPT 核磁共振 |
| 收稿时间： | 1999-09-07 |
DEPT-(90+45),a New Sspectral Editing Technique |
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| DING Keyang.DEPT-(90+45),a New Sspectral Editing Technique[J].Chinese Journal of Magnetic Resonance,2000,17(1):79-82. |
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| Authors: | DING Keyang |
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| Institution: | Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650 |
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| 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. |
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| Keywords: | Spectral editing DEPT NMR |
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