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研究了丙酮肟在四氯化碳和苯乙烯混合溶剂中随苯乙烯摩尔分数变化的1 HNMR ,观察到丙酮肟分子中两个甲基共振峰的化学位移随苯乙烯摩尔分数增加而逐渐移向高场 ,而且两个甲基向高场移动的程度不同 .ASIS值随苯乙烯摩尔分数增加而增加 ,两个甲基共振峰在四氯化碳中是一个单峰 ,而且当混合溶剂中苯乙烯的摩尔分数大于 0 30时分裂为双峰 .丙酮肟分子中两个甲基共振峰化学位移δ与混合溶剂中苯乙烯的摩尔分数呈良好的线性关系
The 1 H NMR of acetone oxime in the mixture of carbon tetrachloride and styrene with varying mole fraction of styrene was investigated. It was observed that the chemical shifts of the two methyl groups in the acetone oxime molecule gradually shifted with the increase of the mole fraction of styrene High field, and the two methyl groups move to high field to different extents.ASIS value increases with the increase of styrene mole fraction, two methyl formant peaks in carbon tetrachloride is a single peak, and when the mixed solvent of benzene The ethylene peak was cleaved to a bimodal ratio when the mole fraction of ethylene was greater than 0 30. The chemical shifts δ of the two methyl groups in the acetone oxime molecule showed a good linear relationship with the mole fraction of styrene in the mixed solvent