High-pressure studies. 28. cis-Diazenes. Pressure effects on their thermal deazatization and isomerization reactions

…, GA Binegar, W Adam, Y Nishizawa

Index: Neuman, Robert C.; Berge, Charles T.; Binegar, Glen Al.; Adam, Waldemar; Nishizawa, Yoshinori Journal of Organic Chemistry, 1990 , vol. 55, # 15 p. 4564 - 4568

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Citation Number: 11

Abstract

Effects of pressure on solution-phase rates of overall thermal decomposition, deazatization, and isomerization of several symmetric cis-diazenes (cis-azoalkanes) have been determined in hexane and in ethanol. Increasing pressure decreases all the rates. The large positive activation volumes for deazatization (eg,+ 16 to+ 22 cm3/mol) have been interpreted in terms of a one-bond scission mechanism and an intermediate diazenyl radical. The ...