硼氮络合物的变温核磁实验

Variable temperature NMR experiment of boron nitride complex

核磁共振(nuclear magnetic resonance,NMR)技术已成为鉴定有机化合物结构的重要方法,在化学、生物医学、材料及食品等领域的应用十分广泛,其中变温核磁是进行构象分析的重要方法之一。该文以一种路易斯酸碱对的硼氮络合物作为研究对象,利用变温核磁技术测试该络合物在不同温度下的核磁氢谱和硼谱,并对实验结果进行了讨论。该实验的开展有利于加深学生对大型仪器设备的认知,提高学生的科研实践能力,培养学生解决问题、分析问题的能力,同时提高实验教学质量。

Nuclear magnetic resonance(NMR) is an important method to identify the structure of organic compounds, which has been widely used in chemistry, biomedicine, materials and food. Variable temperature NMR is one of the important technologies to analyze the dynamic structure of organic compounds. In this paper, a Lewis acid-base pair of boron-nitrogen complex is used as research object. The proton and boron NMR spectra of the complex at different temperatures are tested by variable temperature NMR, and the experimental results are discussed. The experiment can help to deepen students’ cognition of large-scale instruments and equipment,improve their scientific research practice ability, cultivate their ability to solve and analyze problems, and improve the quality of experimental teaching.