Rate constants for the addition of the 2??cyano??2??propyl radical to alkenes in solution

K Hėberger, H Fischer

Index: Heberger; Fischer International Journal of Chemical Kinetics, 1993 , vol. 25, # 4 p. 249 - 263

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Citation Number: 66

Abstract

Abstract Absolute rate constants for the addition of the 2-cyano-2-propyl radical to 26 alkenes CH 2= CXY at 315 K were determined in solution by time-resolved electron-spin- resonance spectroscopy. They vary with the alkene substituents from 30 M− 1 s− 1 to 7′ 010 M− 1 s− 1. For styrene the temperature dependence is given by log k/M− 1 s− 1= 7.7− 26.1/Θ where Θ= 2.303 RT in kJ/mol. An analysis of the substituent effects in terms of polar ...