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核磁共振谱的测定已成为有机化学结构研究的重要方法之一,由核磁共振谱的化学位移及偶合常数等数据可以提供化学结构中的许多信息,随着实验技术的进步、核磁共振有关技术的发展、高分辨核磁共振仪的制成,核磁共振用途更加广泛,除有机化学、高分子化学、生物化学方面还深入到其他许多化学领域。核磁共振原理具有磁矩的原子核和氢好象一个小磁铁,置于磁场 H_0中,不仅自旋,还沿磁场方向 H_0回旋,其回旋频率 v_0和磁场强度成正比,如图1所示。
NMR spectroscopy has become one of the important methods for the study of organic chemical structures. Many data in the chemical structure can be provided by such data as chemical shifts and coupling constants of nuclear magnetic resonance spectra. With the advancement of experimental techniques, the related technologies of nuclear magnetic resonance Development, high-resolution NMR made of a wider range of uses of nuclear magnetic resonance, in addition to organic chemistry, polymer chemistry, biochemistry has also deepened to many other areas of chemistry. Principles of nuclear magnetic resonance Nuclear magnetic moment and hydrogen seem like a small magnet, placed in the magnetic field H_0, not only spin, but also along the magnetic field direction H_0 gyration, the gyration frequency v_0 and magnetic field strength is proportional to, as shown in Figure 1.