有机化学 ›› 1988, Vol. 8 ›› Issue (5): 459-462. 上一篇    下一篇

研究论文

取代基自旋离域参数δT 4: 若干因素对三氟苯乙烯热环化二聚反应动力学测定精确度的影响

蒋锡夔;计国桢;张秀莲   

  1. 中国科学院上海有机化学研究所
  • 发布日期:1988-10-25

The spin delocalization substituent parameter δT 4: The effect of small amounts of impurities on the precision of the kinetic measurements of the dimerization of trifluorostyrene

JIANG XIKUI;JI GUOZHEN;ZHANG XIULIAN   

  • Published:1988-10-25

研究三氟苯乙烯热环化二聚反应的1,4-双自由基反应的机理, 测定了各种取代的TFS二聚的反应速度常数, 以建立一个自旋-去定域化取代基参数, 并研究了影响反应速率的因素.

关键词: 计算, 反应动力学, 浓度, 氟代烃, 反应速度常数, 取代基效应, 苯乙烯 P, 热聚合, 环二聚

Small amts. of 2 mol/L HCl, 1 mol/L Na2CO3, H2O and solid K2CO3 do not affect the precision of the title kinetic measurement. However, air (20 Torr) in the dimerization reaction leads to a substantial loss of precision of the rate constant

Key words: CALCULATION, REACTION KINETICS, CONCENTRATION, FLUOROHYDROCARBON, REACTION RATE CONSTANT, SUBSTITUENT EFFECT, STYRENE P, THERMAL POLYMESIGATION, CYCLODIMERIZATION

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