The effect of the temperature on the rate of reactions of O,O-diaryl phosphorohydrazidothioates with phenyl isothiocyanate in benzene is studied, and the activation parameters of the reactions are calculated. It is established that the reaction series under study obeys the isokinetic relationship with an enthalpy control and an isokinetic temperature of 690±24 K. The effect of electronically diverse substituents on phosphorus on the reactivity of O,O-diaryl phosphorohydrazidothioates is additive. It is described by the Hammett equation with σP constants.
研究了温度对 O,O-二芳基
硫代
磷酰
肼与异
硫氰酸苯酯在
苯中反应速率的影响,并计算了反应的活化参数。结果表明,所研究的反应系列服从焓控制的等动力学关系,等动力学温度为 690±24 K。它可以用带有 σP 常量的 Hammett 方程来描述。