EXPERIMENTAL ASPECTS OF MULTIDIMENSIONAL EXCHANGE SOLID-STATE NMR
EXPERIMENTAL ASPECTS OF MULTIDIMENSIONAL EXCHANGE SOLID-STATE NMR
复制标题
多维交换固态核磁共振的实验方面
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
H. Spiess
中科院分区：
文献类型：
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作者：
D. Schaefer;J. Leisen;H. Spiess
摘要提出了二维交换2H核磁共振的五脉冲序列，提高了所获得光谱的可处理性，并提出了消除不必要信号贡献所需的相位周期。提出了三维傅里叶变换生成纯吸收模式三维2H核磁共振光谱的方案，并讨论了多维2H核磁共振实验的非共振测量。此外，从二维脉冲序列的相位周期推导了用于获取未失真的三维2H NMR光谱的六脉冲序列和八脉冲序列的相位周期。对于自旋- 12的原子核，如13C，和自旋-1的原子核，如2H，在相周期的差异，被明确地处理。
Abstract A five-pulse sequence for two-dimensional exchange 2H NMR that results in improved processability of the obtained spectra is presented, together with the phase cycle necessary to eliminate unwanted signal contributions. The scheme of the three-dimensional Fourier transformation to yield pure-absorption-mode three-dimensional 2H NMR spectra is presented, and the off-resonance measurement of multidimensional 2H NMR experiments is discussed. Furthermore, the phase cycles of six- and eight-pulse sequences for the acquisition of undistorted three-dimensional 2H NMR spectra are derived from the phase cycles of the 2D pulse sequences. Differences in the phase cycles for spin- 1 2 nuclei, such as 13C, and spin-1 nuclei, such as 2H, are explicitly addressed.