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探讨了正丙硫基苯氧基磷酰胺的δ3 1P与胺基上烷基的多种物化参数的关系 ,并对其偶合常数3 JPSCH和3 JPNCH的特点进行了解释。线性回归分析表明 :δ3 1P与Taft常数σ 有良好的正相关性 ,并受烷基的立体效应的影响 ;本系列化合物的偶合常数一般3 JPSCH>3 JPNCH,反映了分子中P—N键和P—S键的成键性质
The relationship between δ3 1P of n-propylthiophenoxy phosphoramide and various physico-chemical parameters of alkyl groups on amino groups was discussed. The coupling constants 3 JPSCH and 3 JPNCH were also explained. Linear regression analysis showed that δ3 1P has a good positive correlation with Taft constant σ and is affected by the stereoscopic effect of alkyl groups. The coupling constants of this series of compounds are generally 3 JPSCH> 3 JPNCH, which reflect the interaction of P-N bond and P-S bond formation properties