【摘 要】
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全氘代吡啶,又名吡啶-d_5,即吡啶环上的五个氢(H)原子全部被氘(D)原子所取代,分子式为C_5D_5N。全氘代吡啶是核磁共振分析中常用的溶剂之一,特别是在中草药成分的剖析中经常
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全氘代吡啶,又名吡啶-d_5,即吡啶环上的五个氢(H)原子全部被氘(D)原子所取代,分子式为C_5D_5N。全氘代吡啶是核磁共振分析中常用的溶剂之一,特别是在中草药成分的剖析中经常使用。由于吡啶环具有π电子云结构,分子中的碳-氢键比较牢固。因此用一般的同位素交换法,在吡啶分子中很难进行氘氢交换。只有在高温高压加催化剂的条件下,氘-氢交换才能发
Full deuterated pyridine, also known as pyridine-d_5, that is, all five hydrogen (H) atoms on the pyridine ring are replaced by deuterium (D) atoms of the formula C_5D_5N. Hollow deuterated pyridine is one of the most commonly used solvents in nuclear magnetic resonance (NMR) analysis, especially in the analysis of herbal ingredients. Due to the π electron cloud structure of the pyridine ring, the carbon-hydrogen bond in the molecule is relatively firm. Therefore, with conventional isotope exchange method, it is difficult to exchange deuterium in pyridine molecule. Only in the conditions of high temperature and pressure plus catalyst, deuterium - hydrogen exchange can be made
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